Abbreviations
The following abbreviations are used in entries in the lexicon itself.
adj. Adjective
int. Interjection
pr. Preposition
loc. Local Usage
(differing from general usage, &/or not in general usage)
n. Noun
v.t. Verb transitive
v.i. Verb intransitive
synon. Synonym
q.v.
Quod vide, which see
i.e. Id est, that is
e.g. Exempli gratia, for
example
etc. Et cetera, and the rest
cf. Confer, Compare
References to the appendices are given in the following form.
ref.~fly. See appendix A, Flying
ref.~tabs. See appendix B, Tabs
ref.~mask. See appendix C, Masking
ref.~L.X. See appendix D, Lighting
13A adj. Thirteen ampere mains cable or standard thirteen amp. rectangular pin mains connectors.
adj. Fifteen ampere mains cable or fifteen amp. round-pin mains plugs or sockets. These connectors are almost universally used for lighting systems (i.e. lanterns (q.v.) , tail (q.v.), etc.) in U.K. theatres. loc. n. 15a St. Edwards Passage, a building used for storage by the Arts Theatre (q.v.) . adj. Sixteen ampere mains cables or sixteen amp. CEE17 (q.v.) connectors. adj. Thirty-two ampere mains cables or thirty-two amp. CEE17 (q.v.) connectors. adj. Five ampere mains cable or five amp. round-pin mains plugs or sockets (similar to 15A (q.v.) but smaller). adj. Sixty-three ampere mains cables or sixty-three amp. CEE17 (q.v.) connectors. n. A lantern (q.v.) consisting of a block of PAR (q.v.) bulbs, mounted together in a four by two array, all pointing in the same direction. Used in film and T.V. lighting, and in rock lighting.802 n. A Bose (q.v.) model 802 speaker.
A. and H. n. Allen and Heath (q.v.).
n. Association of British Theatre Technicians. n. A type of flood (q.v.) manufactured by A.D.B. (q.v.). n. A portable scaffolding tower for temporary access to high level areas. (loc. The A.D.C. has a Q.A. (q.v.) tower, used mainly for working on the grid (q.v.) ) n. (outdated) Short for acting area flood. An old type of flood light (q.v.) , conical in shape. n. AirCraft Lander. A type of lantern (q.v.) often used in rock lighting. n. synon. House Tabs. ref.~tabs. n. A type of six channel (q.v.) portable dimmer rack (q.v.) capable of accepting control directly from D54 or DMX512 multiplex (q.v.). Manufactured by Strand Lighting (q.v.). n. Adrien De Backer, a Belgian lantern (q.v.) manufacturer. n. Amateur Dramatic Club. n. A lighting bar (q.v.) forward of the stage, i.e. in the auditorium. loc. synon. Bar Zero. n. A type of (relatively) lightweight metal framed rostrum (q.v.). n. loc. An adjustable spanner. n. A manufacturer of sound equipment. loc. The A.D.C. has one of their mixers (q.v.) n. The tradename of a family of 2kW or 2.5kW lanterns (q.v.) manufactured by Strand Lighting (q.v.) . The family includes profiles (q.v.), a P.C. (q.v.) and a fresnel (q.v.) n. A Cambridge based stage equipment hire and sale business, part of the Stage Electrics group. Now called Theatre Direct. v.t. synon. Focus. n. A hand-held power tool for cutting or grinding metal or masonry. Used for (amongst other things) cutting scaffolding tube. loc. synon. Magic Monster. ref.~scaff. n. See Proscenium Arch. n. A lighting company manufacturing lanterns (q.v.) , dimmers (q.v.) , and lighting boards (q.v.) , amongst other things. They tend to be more associated with film and television than theatre, at least in this country. Now owned by ETC. n. Cambridge's Professional Theatre. adj. All Singing All Dancing. n. Assistant Stage Manager. n. A type of truss (q.v.) having three bars arranged in an equilateral triangle. Manufactured by Lite Structures. n. synon. Auto-Pilot loc. The state of mind when all conscious thought has ceased, but simple tasks can be and are still carried out. Usually occurs during the latter stages of exhaustion. adj. A suffix applied to the names of lanterns (q.v.) describing the orientation of the light bulb, meaning that the axis of the bulb lies along the line of the beam of the lantern. Most commonly applied to C.C.T. (q.v.) silhouette (q.v.) profiles (q.v.) , to distinguish them from the base down (q.v.) type.B77 n. A type of open-reel tape recorder, manufactured by Revox and widely used in theatre sound systems.
n. A cloth (q.v.) forming the background to a set. n. The technique of projecting an image onto a screen from the opposite side of the screen to the audience. n. See Flat . n. Light that is shone down onto actors from upstage (q.v.) of them. Also v.t. to apply backlight to. ref.~LX . n. Usually refers to a secondary, independent control system within a memory lighting board (q.v.) , to be used should the main board fail. ref.~LX. n. 1. A device used with discharge lamps (q.v.) , basically a large inductor to provide the starting voltage and stabilize operation. 2. An extra load applied to a dimmer (q.v.) in order to bring its total load up to the minimum required. Usually consists of unused lanterns (q.v.) off stage. n. A type of fresnel (q.v.) lantern (q.v.) , used mostly in film and TV lighting. Comes in 2.5kW and 5kW powers,manufactured by Strand Lighting (q.v.) . n. Common name of scaffolding universal coupler. Consists of a U-shaped band and a screw plate , used to hold two scaffolding tubes at right angles or parallel. Also v.t. to clamp by applying a band and plate to. ref.~scaff. (where n is a number) n. synon. Line Set n . ref.~fly. n. A scaffolding tube or a line-set (q.v.) , especially in counterweight flying (q.v.) . ref.~fly. n. A bell in the bar that is rung by the stage manager (q.v.) or house manager (q.v.) in order to encourage the audience the enter the house (q.v.) . Normally rung once, twice or three times for this purpose. ( loc. five bar bells is a signal meaning that all available technicians are required on stage immediately to sort out some minor disaster. In the A.D.C., the bar bell in rung from the stage manager's desk.) n. loc. A lighting bar (q.v.) that is sometimes temporarily installed just in front of the proscenium arch. Gets its name because it lives between bar one (q.v.) and bar zero (q.v.) . adj. The state, in a counterweight flying (q.v.) system, where the flying piece (q.v.) is heavier than its counterweight. The opposite of Cradle Heavy . ref.~fly. n. A type of lighting bar (q.v.) on which there are sockets mounted for the lanterns (q.v.) rigged (q.v.) on the bar to be plugged into. These sockets are supplied via cables which run inside the bar, and are connected to a multicore (q.v.) which leaves one end of the bar and is plugged into the lighting patch (q.v.) system. Usually abbreviated to I.W.B. n. synon. Number one spot bar, LX one . The first on stage lighting bar, positioned immediately behind the proscenium arch (q.v.) . ref.~L.X. n. loc. The lighting bar above the front of the forestage (q.v.) , on the auditorium ceiling. n. synon. Barn doors . A set of four hinged metal flaps attached to the front of a lantern (q.v.) to limit the beam. Also v.t. to reduce the beam from a lantern using barn doors. ref.~L.X. n. synon. Bar . Hence Lighting Barrel , etc. n. synon. Hook Clamp (q.v.) . adj. A suffix to the names of lanterns (q.v.), describing the orientation of the light bulb. The most common types so called are C.C.T. (q.v.) silhouette (q.v.) profiles (q.v.) , to distinguish them from the axial (q.v.) type. n. The number of counterweights (q.v.) required in a cradle (q.v.) to counterbalance just the empty flying bar (q.v.) in a counterweight line set (q.v.) . n. A large speaker cabinet for bass reproduction. n. See Prompt, Bastard. n. The Queens' College Drama Society. n. 1. A lantern (q.v.) consisting of a long metal box containing a line of bulbs and reflectors. 2. n. A piece of timber screwed across the back of adjacent flats (q.v.) to hold them together, or a piece of timber across the top or bottom of a cloth (q.v.) . Also v.t. , to apply a batten to. n. loc. The area opposite the paint dock (q.v.) where all the mains switch-fuses are located. adj. Base Down (q.v.) . n. A lantern (q.v.) producing a narrow, near parallel beam of light. n. The actors required at the beginning of an act. Also the call made to the dressing rooms to summon these. n. A type of miniature PAR can (q.v.) using a 12V lamp. n. A malformed wood screw, lacking a slot in its head and so ideally suited to insertion with a hammer ( a.k.a. Birmingham Screwdriver ). loc. Birmingham Screws: a Shaft of Darkness Club (q.v.) award for coarse (q.v.) carpentry. n. A term describing a simple type of flood (q.v.) , based on its appearance. Often means a patt. 137. n. See Masker . ref.~mask. n. Black drapes or tabs (q.v.) . ref.~tabs. n. loc. (outdated) A compact floodlight (q.v.) . Once used to describe an A.D.B. AC1001 . n. A type of multipole connector often used to connect control signals to dimmer packs (q.v.) [from Belling LEE CONnector] n. 1. A black drape of full stage width. 2. synon. Audience Blinder. A lantern (q.v.) focused (q.v.) on the audience to dazzle them. n. The Director's plan of movements of the actors. n. A type of 2kW portable lantern, used mostly for outside broadcast work. Manufactured by Strand Lighting (q.v.) . n. Blue working lights (q.v.) . n. Blue working lights (q.v.) . n. A lighting control desk. A contraction of the original switchboard . ( loc. In the A.D.C. a Strand 520 Memory Control desk is used.) n. See Patch Board . n. A type of fabric used to make tabs (q.v.) , or a set of drapes made from this. n. A large metal box, sometimes an old water tank or dustbin, used to contain the shrapnel from exploding maroons (q.v.) . n. Two large flats (q.v.) hinged together to form the shape of an open book. n. A vertical scaffolding tube at the side of the stage, used as a lighting position. ref.~L.X. n. A type of elongated clamp used to attach a lantern (q.v.) to a boom (q.v.) . n. A long shallow curtain, or sometimes a canvas covered frame, usually black. Used to hide the equipment above the stage. ref.~mask. n. A border (q.v.) positioned immediately behind the proscenium arch (q.v.) , effectively reducing the height thereof. ref.~mask. n. An American manufacturer of sound equipment, or one of their products. ( loc. The A.D.C. has a power amplifier (q.v.) and some model 802 speakers made by Bose. Bose speakers are unusual in requiring a Bose E.Q. Box (q.v.) to be used with them.) n. An audio frequency equalization unit used at the input of a power amplifier (q.v.) to correct for the frequency response of Bose (q.v.) speakers. n. A device for the fine adjustment of the length of a flying wire (q.v.) ref.~fly. n. The lowest point to which a hemp line set (q.v.) can be lowered. Usually a deliberate restriction imposed temporarily ( e.g. for a particular show). Also v.t. To apply a bottom dead to. n. The physical stop in a fly frame (q.v.) which limits the decent of the cradle (q.v.) . Also the position of a flying bar (q.v.) when its associated cradle is at bottom stop, i.e. the bar's maximum height. v.t. To pull on a hemp line set (q.v.) and then to allow it to fall back onto its bottom dead (q.v.) . Has the effect of stretching the ropes slightly and tightening the tie-off knot. ref.~fly. n. A part of a headphone intercom system via which a headset can be connected into the system. May be worn on a belt clip or permanently fixed somewhere. n. See F and D. n. See Lime Box . n. See Pyro Box . n. A set comprising a completely enclosing set of flats (q.v.) , usually to form a realistic room setting. n. Back Projection (q.v.) . n. A screen made of material designed to allow back projection (q.v.) . n. A device for holding up flats (q.v.) . There are two types: french braces (q.v.) and stage braces (q.v.). Also v.t. To apply one or more braces to. n. A right angled triangle made of wood which is hinged to the back of a flat. n. An extendable wooden or metal staff, with two curled prongs at one end and a narrow plate at the other. Used in conjunction with a screw-eye (q.v.) in the back of a flat, and a brace weight (q.v.) . n. See Weight . n. A rope passing across the stage so as to pull a line set (q.v.) horizontally upstage (q.v.) or downstage (q.v.) . Also v.t. To move a line set by applying or adjusting a brail. n. , v.t. , v.i. 1. In hemp flying: to hold or lower in a hemp line set (q.v.) using the friction of the ropes around the cleat (q.v.) . Also the arrangement for doing this. 2. In counterweight flying: to apply the mechanical brake to the control line (q.v.) . ref.~fly. n. The mechanical braking system which clamps the control line (q.v.) of a counterweight line set (q.v.) . ref.~fly. n. Any platform running across and above the stage. Often used as a lighting position (q.v.) . loc. There is a bridge above the proscenium arch in the A.D.C., which was closed off in 1991 to form a dimmer (q.v.) and patch (q.v.) room.Cadenza n. A family of 2kW lanterns (q.v.) manufactured by Strand Lighting (q.v.) . The family includes profiles (q.v.) , a fresnel (q.v.) , a P.C. (q.v.) and an effects projector.
v.i. To cue (q.v.) to all the technical departments (lighting, sound, flies (q.v.) etc. ) at the correct times during a show, working from the Prompt Copy (q.v.) . n. A type of step ladder. Hence Lambda Camel loc. synon. Lambda A free standing step ladder with an extension above the apex of the A-shape, so shaped like a lower case greek lambda, l . n. loc. A period in the summer when the theatre is dark (q.v.) and undergoes maintenance and/or enhancement by the technicians.Cans n. Headphones, especially a headset intercom system.
n. A headset-based intercom system, or the cables used to interconnect such a system. n. A family of 1kW or 1.2kW lanterns (q.v.) manufactured by Strand Lighting (q.v.) . The family includes profiles (q.v.) , a fresnel (q.v.) , a P.C. (q.v.) and a followspot (q.v.) . n. A type of 35mm remote control slide projector which takes a circular magazine holding 120 slides. n. See Trap, Carpet Cut . n. loc. A pair of openings in the auditorium ceiling, near the side walls and about the same distance back from the stage as the dome (q.v.) . They were once used as lighting positions (q.v.) , and are named after mythical twins. n. See Ladder, Cat . n. A narrow bridge (q.v.) . n. Colin, Colin and Terry. A lantern (q.v.) manufacturer. adj. A type of round bodied connector. They come in many sizes (for different current capacities), but are all colour coded according to the voltage at which they are used: yellow for 120V, blue for 240V and red for 415V (three phase). Equivalent to BS 4343. adj. synon. CEE17 . n. A manufacturer of lighting boards (q.v.) , or one of their products. n. See Drift Chain . ref.~fly. n. , v.t. See Safety Chain .Chamber of Horrors, Dr. Humble's
n. loc. The sound shelf cupboard (q.v.) . n. A device consisting largely of a mains relay, to enable two lanterns (q.v.) , used at separate times, to be controlled by the same dimmer (q.v.) . The lanterns are plugged into the change-over box, which is plugged into the dimmer outlet and a switch circuit (q.v.) to control the relay. n. A single input or output from equipment. Usually an abbreviation of Mixer Channel or Dimmer Channel . n. A lighting effect in which a sequence of lanterns (q.v.) are flashed in order, so that the light appears to chase from one to the next. n. synon. First Electrician . See Electrician . int. A warning that a flying bar (q.v.) is about to rise, or sometimes an apology that it just has! cf. Heads . n. A type of high temperature resistant gel (q.v.) manufactured by Strand Lighting (q.v.) . n. Compact Iodine Daylight, a type of discharge lamp (q.v.) . n. A type of gel (q.v.) manufactured by Rosco (q.v.) . n. A type of gel (q.v.) manufactured by Strand Lighting (q.v.) . n. 1. A controllable lighting circuit, usually a dimmer (q.v.) , sometimes a non-dim (q.v.) . 2. Part of the permanent electrical installation which connects a lantern socket (on a lighting bar (q.v.) , boom (q.v.), etc. ) to a patch bay. 3. The combination of 1 and 2 . n. A device which is designed to interrupt a (usually mains) power supply if the current flowing becomes too large. Some types will break the circuit for other reasons, for example if there is earth leakage current. n. See Switch Circuit . n. Abbreviation of Claw Hammer , a hammer with a claw for removing nails. n. An Italian lantern (q.v.) manufacturer, making mainly intelligent articulated luminaires (q.v.) . Its products include Goldenscan and Superscan . n. A metal fixture with projections suitable for tying rope or cord on to. Small cleats are often used to tie flats (q.v.) together, larger ones to tie-off (q.v.) hemp line sets (q.v.) .ref.~fly. n. A large sheet, painted to form a background setting. n. synon. Cyc. Strainer . n. A cloth cut to provide door openings or a scenic false proscenium. n. Usually synon. Floor Cloth , but sometimes synon. Cloth. n. A knot commonly used to tie barrels (q.v.) onto hemp line sets (q.v.) ref.~fly. adj. Totally lacking any kind of subtlety. Possibly from the proposition that Coarse Engineering is the antithesis of fine art. n. A family of flood (q.v.) lanterns (q.v.) from Strand Lighting (q.v.) . The family includes symmetric and cyc. flood (asymmetric) (q.v.) reflector versions in single units and battens (q.v.) . n. , v.t. synon. Gel . n. synon. Gel Call . n. The generic term for any device that fits onto or into a lantern (q.v.) to enable the colour of the output light to be changed. Common types are Colour Wheels (q.v.) , Scrollers (q.v.) and Semaphore units (q.v.) . n. synon. Gel Frame . n. synon. Gel Runners . n. A motorized wheel which attaches to the gel runners (q.v.) of a lantern (q.v.) , and allows any one of a number of pieces of gel (q.v.) , which are held in the wheel, to be positioned in front of the lantern's lens. n. A Cambridge town drama group, including some graduates. synon. C.A.C. , loc. synon. Cack Actors . n. A type of lens placed in front of the lamp and reflector in a (usually profile (q.v.) ) lantern (q.v.) to increase its optical efficiency. Also sometimes a lantern with such a lens, e.g. Minuette Condenser . n. A type of pipe used in electrical installation. The metal version is also used to provide weight at the bottom of cloths (q.v.) , borders (q.v.) , etc. n. A pyrotechnic (q.v.) device used to cover the stage or audience with confetti. n. synon. Control Rope . n. The rope in a counterweight flying (q.v.) system which the operator pulls in order to move the flying bar (q.v.) . v.t. , v.i. To be incapacitated by risibility while trying to act, or to cause another to be so afflicted. n. A weight of suitable dimensions for use in the cradle (q.v.) of a counterweight line set (q.v.) . ref.~tabs. n. synon. Counterweight Line Set . n. Usually means a scaffolding coupler, i.e. a device for holding two scaffolding tubes (q.v.) together. These come in a variety of types:See also Kee Clamp . ref.~scaff.
n (where n is a number) n. A "studio class'' type of light bulb. Some are used in theatre lanterns (q.v.) , examples are CP77, CP79, CP43, CP41 , etc. cf. Tn . n. A type of smoke fluid, or the smoke produced therefrom, which is a near transparent haze, often used to make the beams from lanterns (q.v.) visible. n. The frame in a counterweight line set (q.v.) that holds the weights. ref.~fly. adj. The state, in a counterweight flying (q.v.) system, where the flying piece (q.v.) is lighter than its counterweight. The opposite of Bar Heavy . ref.~fly. n. A set of tabs (q.v.) which open and close horizontally on a tab track (q.v.) . synon. Runners . ref.~tabs. n. A large tool for levering and extracting nails. synon. Wrecking Bar . n. Compact Source Iodine, a type of discharge lamp (q.v.) . n. Cambridge Theatre Company. n. The words or action in a show taken as the signal for a technical effect, or the technical effect itself. Also v.t. , to start an effect on a cue. n. A set of lights used to signal technicians that a cue (q.v.) is imminent or has arrived. ( loc. In the A.D.C., a red cue light (a warn ) means a cue is imminent, while green (a go ) means it has arrived. The cue lights are controlled by the stage manager (q.v.) .) n. Cambridge University Light Entertainment Society. n. loc. The large metal cupboard that lives in the R.S.M.'s office and houses (amongst other things) the portable parts of the cans (q.v.) system when they are not in use. n. loc. The cupboard built into the wall behind the sound shelf (q.v.) (it is actually part of the green room (q.v.) roof void (q.v.) ) which houses various bits of sound equipment. synon. Dr. Humble's Chamber of Horrors . n. loc. The cupboard on the wall in the green room (q.v.) , next to the tab rack (q.v.) . Houses all the bits and pieces used to fly (q.v.) flats (q.v.), i.e. flying wires (q.v.), flying irons (q.v.), bottle strainer (q.v.), etc. when they are not in use. n. A piece of hardboard or similar, curiously shaped and painted. n. Abbreviation of Cyclorama (q.v.) . n. A line of battens (q.v.) used to light a cyc. n. A type of flood (q.v.) with tapered illumination, designed to light a Cyc. (q.v.) evenly when placed close to one edge. n. A metal frame used hold a cyc. n. A type of diffuser gel (q.v.) which spreads the beam of a lantern (q.v.) in one direction only. Often used in cyc. floods (q.v.) to widen their spread, hence the name. n. A device consisting a two pieces of wood, hinged together, with a bolt through them, attached to a piece of cord. A cloth (q.v.) or cyc. (q.v.) is gripped between the wood and then the cord is tied to something so as to stretch the cloth sideways. synon. Cloth Clamp . n. A large cyclorama, stretching in a horseshoe shape around the stage. n. A skycloth: a large, usually white, backcloth. Usually abbreviated to Cyc. n. Cambridge Youth Theatre.D54 n. A type of analogue multiplexed (q.v.) signal used for controlling dimmers (q.v.) . Invented by Strand Lighting (q.v.) .
v.t. To connect two or more items in series. adj. A theatre is said to be dark if there are no shows happing there. n. Dead Black Out. n. A device which delays a signal for a small amount of time. It is used in sound systems to compensate for different sound travel times from different groups of speakers to the audience. ref.~sound. n. A limit to the travel of a line set (q.v.) . Also v.t. to set a limit to the travel of a line set. n. The dead (q.v.) at the lower limit of travel for a line set (q.v.) . Also v.t. to set or adjust the bottom dead for a line set (q.v.) . ref.~fly. n. 1. On a hemp fly floor (q.v.): a second fly rail (q.v.), usually below the main one, used for tying bottom deads (q.v.). 2. On a counterweight fly floor (q.v.): a rail with which dead (q.v.) marks on the control rope (q.v.) are aligned. ref.~fly. n. The stage floor, especially in flying (q.v.) . Also v.t. To lower a line set (q.v.) or flying piece (q.v.) all the way to the stage floor. n. A device for extracting individual channels from a multiplexed (q.v.) signal. Usually found connected between the control signal from the lighting board (q.v.) and dimmers (q.v.) . 1. n. synon. Demultiplexer . 2. v.t. to translate a multiplexed signal (q.v.) into its component signals. n. Often an abbreviation of Set Designer , the person responsible for the set (q.v.) design, and usually its painting. See also Lighting Designer . n. A hand-held remote control unit for a memory lighting board (q.v.) , designed for use by the lighting designer (q.v.) during focusing (q.v.) and/or plotting >(q.v.) . Usually more powerful than a rigger's control (q.v.) , allowing lighting states (q.v.) to be recorded and recalled as well as individual dimmer channels (q.v.) to be controlled. n. David Hersey Associates, a lighting company who make a range of gobos (q.v.) and special effects devices. n. loc. Dreaded Human Counterweight, the technique of using ones own body as a counterweight in hemp flying (q.v.) . Goes wrong if the flying piece (q.v.) is heavier than you are. ref.~fly. n. A type of digitally controlled dimmer (q.v.) manufactured by Arri Lighting. n. The equipment used to control the brightness of lanterns (q.v.) , under the control of the lighting board (q.v.) . They are grouped together in racks (q.v.) . May be used as an abbreviation Dimmer Rack or Dimmer Channel . ref.~L.X. n. A single dimmer (q.v.) , or the output therefrom. n. A small, usually portable unit housing typically between 2 and 10 dimmer channels (q.v.) . n. A collection of individual dimmers grouped together with a common power supply and control source. Dimmer racks typically house between 6 and 30 dimmer channels (q.v.) each. loc. The A.D.C.'s dimmer racks are housed in the scene dock (q.v.) and on the bridge (q.v.) . n. Abbreviation of Dip Trap (q.v.) . n. A small trap door in the stage floor under which there are dimmer patch (q.v.) outlet sockets. ref.~L.X. n. The person responsible for the cast and for artistic decisions. n. See Technical Director . n. Abbreviation of Distribution. Sometimes used on its own to mean high current mains distribution cables or equipment. n. A device for distributing power or signals from an input or inputs to numerous outputs. Often used with mains to distribute one high current input amongst several appliances, with each output having its own fuse or M.C.B. (q.v.) . n. A type of light bulb which produces light from an electric arc through the gas mixture inside it. They are more efficient than filament lamps, but much more difficult to dim. 1. v.i. To convert a gauze (q.v.) from being opaque to being transparent by changing the lighting. 2 n. A projection technique in which two slide projectors are aimed at the same screen, and one projector is faded on as the other is faded off, so that the image from the first projector appears to dissolve into the image from the second. n. A device which, when connected to suitable projectors, enables them to be used for dissolve (q.v.) by dimming their lamps. n. A type of digital multiplexed (q.v.) signal, used for controlling dimmers (q.v.) and some other lighting equipment, e.g. Scrollers (q.v.) . n. loc. The area near the sink, opposite the power bay (q.v.) , just inside the dock doors (q.v.) where stage paint is mixed and sometimes stored. n. See Scene Dock . n. A lighting position (q.v.) situated in the the auditorium ceiling. n. loc. A counterweight suitable for the counterweight flying (q.v.) system in the A.D.C. These weights were so named because they were cut from large pieces of steel by Donald Mackay (Engineering) Ltd., and when they were delivered the steel had been cut so that one weight exactly framed the word "Donald'' (presumably part of the original delivery address) and the name was born. n. See Barn Door . n. A large door (usually double) which leads into the scene dock (q.v.) . ( loc. There are double dock doors leading from the yard into the paint dock (q.v.) and thence to the scene dock (q.v.) at the A.D.C.) n. A large door (usually double) onto the stage from outside, used to bring in set etc. during a get-in (q.v.) . ( loc. The nearest the A.D.C. has it the fire escape from the auditorium.) n. A door connecting the foyer to the stage area. loc. The steel fire doors between the quads (q.v.) and the stage. n. See Coupler . n. Light that is shone down onto actors from directly above them. Also v.t. to apply downlight to. ref.~LX. pr. Towards the front of the stage, i.e. towards the auditorium. n. Dress Rehearsal, or Dressing Room. n. A water pipe or pipes above the proscenium arch (q.v.) , used to soak the iron (q.v.) in case of fire. loc. Recently removed from the A.D.C. n. synon. Dress Rehearsal . n. The distance between a flying piece (q.v.) and its supporting barrel (q.v.) , or the flying wire (q.v spanning this gap. Also v.t. , to hang a flying piece (q.v.) on a drift. ref.~fly. n. A heavy duty chain used to attach flying pieces q.v.) , to barrels (q.v.) . Often used to attach another bar to a counterweight line set (q.v.) . n. synon. Flying Wire . n. The special effect of dropping something ( e.g. balloons, glitter, confetti, etc. ) from from the flies (q.v.) , or the arrangement for doing this. ref.~fly. n. synon. House Tabs . n. See Back Drop . n. A plug on a short length of cable in a patch bay (q.v.) , connected to a socket in a lighting position (q.v.) . Part of the lighting patch (q.v.) , where it is used to connect a lantern (q.v.) to a dimmer (q.v.) output. n. Solid carbon dioxide, used to produce a low lying fog effect on stage. n. The height to which borders (q.v.) are flown (q.v.) , to enable the stage crew to remove the dust from them. ref.~fly.EC90 n. A type a digitally controlled dimmer (q.v.) manufactured by Strand Lighting (q.v.) .
n. A type of memory lighting board (q.v.) manufactured by Zero 88 lighting. n. See Rack, Effects. n. A processing device for a sound signal, used for special effects e.g. echo, distortion etc. or for more subtle compensation purposes. ref.~sound. n. Earth-Leakage Circuit Breaker. A type of circuit breaker (q.v.) which will interrupt the mains supply if current leakage to earth is detected. n. A person working on lighting, or sometimes on sound. Unlike in the rest of the world, in the theatre this term does not imply any specific qualifications or knowledge. ref.~L.X. n. The electrician in charge of rigging (q.v.) lanterns (q.v.) and usually of plotting (q.v.) . n. synon. Chief Electrician . n. A general term meaning all of the equipment used for lighting or sometimes all electrical or electronic equipment used on stage, e.g. lighting, sound, pyro (q.v.) , etc. n. An American term for profile (q.v.) , derived from the shape of the reflector in some of them. n. loc. ( pron. Embers) Estates Management and Building Service. The department of the University which is responsible for maintaining the fabric of the A.D.C. Theatre building (and some other things). See also Flash Lightning and Co. n. Effects Projector. (A type of lantern (q.v.) ). n. Abbreviation of Equalization , particularly the frequency equalization built into mixers (q.v.) . ref.~sound. n. loc. synon. Bose E.Q. Box . n. See Graphic Equalizer. n. loc. The A.D.C. Theatre's vacuum cleaner, a cylindrical device on castors. The Arts Theatre's (q.v.) is called R2D2. n. loc. The European Theatre Group (of Cambridge University). n. A company who manufacture flying (q.v.) equipment, tab tracks (q.v.) , etc. ( loc. They designed and installed the A.D.C.'s counterweight flying system.) n. The longest line in a line set (q.v.) . ref.~fly. n. The shortest line in a line set (q.v.) . ref.~fly. n. See Screw Eye .Fader n. A sliding control, usually used to vary the level of light or sound.
n. A second proscenium arch (q.v.) placed inside the main one to reduce its size. Usually constructed of flats (q.v.) . If it is immediately behind the main proscenium arch, the vertical flats are known as Tormentors . ref.~mask. adj. Fader and Dimmer , a type of demultiplexer (q.v.) used for controlling dimmers (q.v.) , in which provision is made for control of the dimmers by manual faders (q.v.) instead of or as well as the multiplexed signal. n. An F. and D. (q.v.) demultiplex (q.v.) unit, usually with 24 output channels. n. Fade to Black Out. n. Abbreviation of Ferrograph (q.v.) . n. A company who make open-reel tape recorders. Also used to mean one of their products. ( loc. The A.D.C. has a Ferrograph Logic 7 tape deck as part of the sound system.) n. A long cable with light bulbs positioned at intervals along its length. n. A type of 120V PAR64 (q.v.) lamp having a very narrow beam. n. A type of 120V PAR64 (q.v.) lamp having a narrow beam. n. A type of 120V PAR64 (q.v.) lamp having a medium beam. n. A type of 120V PAR64 (q.v.) lamp having a wide beam. n. A short theatre safety inspection that the Stage and House managers (q.v.) must have done by the half (q.v.) before each performance. Also v.i. to carry out a fire check. n. See Passage, Fire . n. See Electrician . n. , v.i. The process of assembling the set, hanging lanterns (q.v.) , etc. before a show, or to do this. n. A proprietary liquid used to flame proof any fabric (except that which is part of costumes) that is used on stage in order to meet the fire regulations. n. A firebrick with suitable electrical connections, used to detonate special effects flashes. Mostly superseded by Pyro Cartridges (q.v.) . n. loc. The E.M.B.S. (q.v.) direct labour force. n. The substance burnt to produce a flash. Usually predominantly magnesium powder. v.t. To check that lanterns are correctly tailed (q.v.) and are working by plugging them into a live socket. ref.~L.X. n. A rectangular frame of wood, with one or both sides clad in canvas or hardboard, or sometimes plywood. n. A flat (q.v.) placed behind a window or door in a set to represent the scene behind. n. A flat (q.v.) containing a doorway, with or without a door attached. n. A large flat (q.v.) , usually black, used to limit the stage area visible to the audience ref.~mask. n. See Pack, Flat. n. A flat (q.v.) with a window cut in it. The window may or may not be glazed. n. A thin flexible plastic tube containing small closely spaced lights. Can be used to highlight edges in sets, etc. Manufactured in a number of colours by Northern Light. n. The volume above the stage area devoted to the flying system. ref.~fly. v.t. To lower a large flat (q.v.) to the floor by footing (q.v.) it and letting it fall. n. A microphone placed on the stage at the front, in a position similar to footlights (q.v.) . n. Footlights (q.v.) (the lighting equipment, not the Cambridge drama society), or sometimes float mics (q.v.) . ref.~L.X. n. loc. The empty space under the only permanent part of the A.D.C.'s forestage (q.v.) , which used to be used to house floats (q.v.) . n. A lantern (q.v.) with a very wide beam spread. ref.~L.X. n. A type of PAR can (q.v.) having twin yokes (q.v.) and usually a short nose. Designed to be used standing on its yokes on the floor without requiring a separate stand. n. A thick cloth which is placed over the stage floor and held there with tacks and then painted if it is required to paint the stage floor. n. See Loading Floor . n. A volume below the floor and above the ceiling of the room below (if there is one). ( loc. In the A.D.C. they exist below the green room (q.v.) , the P.S. wing (q.v.) , and the rear half of the auditorium.) n. Abbreviation of Fluorescent Tube , especially when they are used as working lights (q.v.) . v.t. To support from above by means of pulleys and ropes or wires. ref.~fly. n. A complement of one or more flymen (q.v.) . n. The platform or gantry from which the height of line sets (q.v.) in controlled. For hemp line sets (q.v.) , also the place where the lines are tied off. ( loc. The A.D.C. has two, one (the original) above the prompt side (q.v.) wing (q.v.) for the hemp line sets (q.v.) and one above the opposite prompt (q.v.) wing (q.v.) for the counterweight line sets (q.v.) .) n. The metal system of tracks and beams inside which the cradles (q.v.) of a counterweight flying (q.v.) system move. n. synon. Fly Floor . n. The rail along the side of a fly floor which supports the cleats (q.v.) to which hemp line sets (q.v.) are tied off, or the brake blocks (q.v.) of counterweight line sets (q.v.) . ref.~fly. n. The structure around the flies (q.v.) , supporting the grid (q.v.) . Often protrudes from the top of a theatre. n. The generic term for the process of suspending anything from above. ref.~fly. n. A scaffolding tube for use on a line set (q.v.) . ref.~fly. n. See Cupboard, Flying . n. Any piece of scenery that is flown (q.v.) , usually a flat (q.v.) . Sometimes used to mean anything (not necessarily scenery) that is flown. n. A metal part, screwed to an object to be flown (usually at the bottom) to facilitate the attachment of flying wires (q.v.) . ref.~fly. n. Changing the position of one or more flying pieces (q.v.) during a performance, within view of the audience. n. A small flat trolley on wheels, about 18 inches square and 3 inches high, used for moving heavy objects around the stage or dock (q.v.) areas. Sometimes also used as mobile bases for Tank Traps (q.v.) . n. A flexible steel wire, used to suspend flats (q.v.) , or sometimes other things, from a flown barrel (q.v.) . ref.~fly. n. A single line used for flying (q.v.) . May be part of a line set or used alone. n. (outdated) Once an A.D.C. Theatre technical bulletin. n. One who operates a flying (q.v.) system. ref.~fly. v.t. To make adjustments to a lantern (q.v.) , to change the beam shape, size or direction. synon. Angle . ref.~L.X. n. Front of House, or sometimes F***ed Off Home. n. A profile spot (q.v.) which is mounted on a stand so that it can be moved easily. It is used by an operator to follow an actor with the beam. synon. Lime . n. loc. (outdated) The first edition says: "Anything constructed in the theatre, for general use, by Davies. "Folly'' is a trademark of Dial-a-Light, Inc., a wholly owned subsidiary of Davies and Davies, Rent-a-Bodge and Co." n. loc. (outdated) A remote lighting board. v.t. To place ones foot against something to prevent the bottom of it from sliding along the floor. n. A line of lights along the front of the stage. Also the name of a Cambridge revue company. n. That part of the stage which is on the auditorium side of the proscenium arch (q.v.) , usually over the orchestra pit. (loc. In the A.D.C. there are two configurations of forestage, one flat and one stepped.) n. The missing wall in a box set (q.v.) , i.e. the one which would be across the proscenium arch (q.v.) . n. loc. A system of red signal lights and buttons used by the stage manager (q.v.) to tell the house manager (q.v.) that the cast and crew are ready to start a show, and then by the house manager to tell the stage manager when the audience are ready. n. See Gel Frame . n. See Cyc. Frame . n. See Gel Frame . n. See Brace, French . n. A flat (q.v.) which is flown (q.v.) . n. , adj. A type of lens, or a lantern (q.v.) employing such a lens. ref.~L.X. v.t. To perpetrate some makeshift arrangement. n. That part of a theatre to which the public are admitted. n. A type of gel (q.v.) with a frosted surface to diffuse light passing though it. adj. Further Use Completely Terminated. Also Failed Under Continuous Test etc. n. Effects, usually sound effects.Gaffer Tape n. A fabric backed tape, usually two inches wide, also known as duct sealing tape. Comes in black and white, and also other colours. Used for bodging or holding almost anything that requires temporary repair or installation.
n. A very powerful memory lighting board (q.v.) from Strand Lighting (q.v.) . n. See Fly Gallery . n. See Loading Gallery . n. Great American Market, a company who manufacture gel (q.v.) . n. A person of avarice, especially gluttony, or simply a technician in proximity to free food or drink. See also Ripco Gannet . adj. Scrap or surplus material, especially timber. Also v.t. To destroy something, salvaging any material that may be reusable. n. A temporarily rigged (q.v.) lighting bar (q.v.) , the lanterns on which are connected to dimmer (q.v.) outlets with tails (q.v.) . cf. Internally Wired Bar . ref.~L.X. n. loc. The wooden frame in the A.D.C. yard used to store gash (q.v.) timber. Often a source of set building materials. n. The assembly mounted in the focal plane of profile spots (q.v.) which houses the beam shaping shutters. It usually also includes a slot for insertion of an iris (q.v.) or gobo holder (q.v.) . n. The support frame of a gate-legged rostrum (q.v.) , usually a folding structure which opens out to form a rectangular base. n. A large sheet of fabric, usually larger than the proscenium arch (q.v.) , which can be made to appear opaque or nearly transparent by the use of different lighting. Various types exist, a common one is Sharks-tooth . n. loc. A gauze owned by the A.D.C., having strange stains ever since being used on the last night of a Pantomine (Dick Whittington) in which one of the characters was a rat. The last night "supercharging'' of a prop fountain and the addition of colouring to the water therein meant that the gauze would never be the same again. n. A carpentry tool, used (amongst other things) to hold flats (q.v.) together during battening (q.v.) operations. n. The coloured filter material that is placed in front of lanterns (q.v.) to colour their output light. Also v.t. To install gel in a lantern. ref.~L.X. n. A small pack of samples of each of the colours available in a particular manufacturer's range of gel (q.v.) . n. , v.i. The collection of pieces of gel (q.v.) needed for a particular rig (q.v.) , or the action of collecting them. n. The frame (usually metal) that holds and supports the gel (q.v.) in a lantern (q.v.) . ref.~L.X. n. The grooves in the front of a lantern (q.v.) which hold a gel frame (q.v.) and/or barn doors (q.v.) in front of the lens. n. A trolley in which a range of colours of gel (q.v.) are stored, in pieces of appropriate size for use in gel frames(q.v.) . ( loc. In the A.D.C. it is blue and usually found in the green room, sometimes disguised as a table.) ref.~L.X. n. A memory lighting control board (q.v.) manufactured by Strand Lighting (q.v.) . ( loc. this is the type of lighting board used in the A.D.C.) n. synon. Sex Changer . n. A type of pyrotechnic (q.v.) effect which produces a shower of sparks. n. A route from one wing to the other, out of the view of the audience. ( loc. If this cannot be achieved between the set and the back wall of the stage, the route involves going through the scene dock (q.v.) and up a vertical ladder.) n. , v.i. synon. Fit-up . n. , v.i. synon. Strike . n. The hourly rate of pay for crew working on a get-out (q.v.) . v.i. A show is said to go down on its last night. A performance comes down at the end of the final act. v.i. A show is said to go up on its first night. A performance goes up, or is taken up, when the stage manager (q.v.) orders the start. n. A device, usually a cut piece of sheet metal, held in the gate (q.v.) of a profile spot (q.v.) to project a simple image or pattern. n. A metal frame used to hold a gobo (q.v.) in the slots in the gate (q.v.) of a profile spot (q.v.) . n. A type of intelligent articulated luminaire (q.v.) manufactured by Clay Paky (q.v.) . adj. General Post Office: a type of jack plug (q.v.) , used in telephone switchboards, and also found in sound systems (particularly in patch panels (q.v.) ). n. Abbreviation of Graphic Equalizer to vary the relative amplitude of different frequency bands within a signal, usually to compensate for building acoustics. ref.~sound. n. loc. The store cupboard in the A.D.C.'s dressing room 1 where old dead television sets and monitors (amongst other things) are stored. The sets are kept so that they can donate their parts to help others continue living a useful life as part of the Video Relay (q.v.) . n. The room where actors wait before going on stage, or where props (q.v.) are kept. ( loc. In the A.D.C., the green room is an extension of the prompt side (q.v.) wing (q.v.) .) n. A 15A adaptor, usually (and loc. ) a type that allows two plugs to be connected to one socket. ref.~L.X. n. Grey drapes. ref.~tabs. n. The framework above the stage, holding all the pulley blocks for the flying (q.v.) system. ref.~fly. n. See Angle Grinder . n. 1 . A line of floods (q.v.) placed on the floor, usually to light a cyc. (q.v.) synon. LX ground row . 2. A long thin flat (q.v.) placed horizontally, often used to hide a lighting ground row synon. Scenic ground row . n. 1. On manual lighting boards (q.v.) : a set of faders (q.v.) , being part of one or more presets, under the control of a separate master (q.v.) (the Group Master ). 2. On a memory lighting board (q.v.) : an arbitrary association of one or more dimmer channels (q.v.) which can be stored and recalled later, and which enables these channels to be manipulated as one. ref.~L.X. n. One of the output groups on a mixer (q.v.) . Each individual input channel can be fed to a given main group by setting a switch on that channel. n. A fader (q.v.) which controls the output level from a group (q.v.) . n. synon. Main Group . n. A strip of metal with a hump in it. When screwed to the top of a flying piece (q.v.) , with a flying wire (q.v.) passing under it, it holds the wire to the flying piece. Used in conjunction with a flying iron (q.v.) .Half, The n. The time half an hour before the beginners (q.v.) are due on stage, i.e. 35 minutes before the show is due to start.
n. A type of frosted gel (q.v.) , which diffuses a lantern's (q.v.) beam slightly, softening the edges. Available in at least two grades of frosting, and in both colourless and tinted versions. Made by Rosco (q.v.) . n. The Lee (q.v.) equivalent of Hamburg (q.v.) . n. A small item carried by an actor which is not part of costume. v.t. To put up a lantern (q.v.) or lanterns. Sometimes also n. , the overall arrangement of lanterns. synon Rig . ref.~L.X. v.t. To hang (q.v.) a lantern (q.v.) above, instead of below, the bar supporting it. synon. Over-rig . n. A family of 1kW lanterns (q.v.) manufactured by Strand Lighting (q.v.) . The family includes profile spots (q.v.) , a P.C. (q.v.) and a fresnel (q.v.) . n. Abbreviation of Hauling Line (q.v.) . n. A rope used to haul up or lower equipment by hand. n. A flown (q.v.) piece of scenery performing the function of a border (q.v.) . ref.~mask. n. The pulley immediately above the fly floor in a flying system (q.v.) , over which the fly-lines (q.v.) run. ref.~fly. int. A warning that something is about to descend or fall, or sometimes an apology for something that just has! cf. Chins . adj. See Bar Heavy . n. A type of rope, often used in flying (q.v.) . n. Abbreviation of Hemp Line Set. See Line Set, Hemp . adj. A method of combining the outputs of different sections of a lighting board (q.v.) so that each channel has an output level equal to the highest from any section for that channel. ref.~L.X. n. A company who manufacture heavy duty impact drilling machines, or one of their products. ( loc. The A.D.C. owns one of their smaller products.) n. See Pin Hinge . n. The pin which is used as the pivot in a pin hinge (q.v.) . n. See Clove Hitch . n. See Rolling Hitch . n. loc. House Keeper (q.v.) . n. House Lights. n. Halogen Metal Iodine, a type of discharge lamp (q.v.) . n. See Gobo Holder . n. A patch of relative darkness within a wash (q.v.) , usually due to a focusing (q.v.) error. n. A hook shaped metal clamp for attaching lanterns (q.v.) to barrels (q.v.) . The hook is placed over the barrel and a wing-bolt tightened to clamp it; the lantern is bolted to the bottom of the hook clamp. ref.~L.X. n. A large hook clamp (q.v.) which accepts a T.V. spigot (q.v.) instead of being directly fixed to a lantern (q.v.) yoke (q.v.) . n. The audience or auditorium, usually with respect to size in terms of numbers of people. n. See Border, House . n. Auditorium Lighting. n. loc. A switch which causes the house lights (q.v.) to come on, regardless of other controls, until reset by the stage manager (q.v.) . n. See Manager, House . n. The main front curtains across the proscenium arch. ref.~tabs. n. loc. The R.S.M. (q.v.) and the publicity manager (q.v.) at the A.D.C. are sometimes known as the Technical Housekeeper and Publicity Housekeeper respectively. n. High Temperature, a type of burn and melt resistant gel (q.v.) made by Lee lighting (q.v.) . Similar to Supergel (q.v.) . n. Highest Takes Precedence (q.v.) .Iadi n. A type of flood (q.v.) manufactured by Strand Lighting (q.v.) . Notable because it is one of very few floods which accept barn doors (q.v.) .
n. A line marked on the stage floor to indicate a sight line (q.v.) . n. International Electrotechnical Commission. The term usually refers to a type of 3 pin mains connector approved by them (IEC320), often used on lanterns (q.v.) and other equipment. synon. Kettle Plug . n. A short mains cable having an I.E.C. (q.v.) connector at one end and usually a 15A or 13A plug at the other. synon. Kettle Lead . n. loc. Impulse Generator, i.e. anything used to hit things. Often means a hammer. n. A type of memory lighting board (q.v.) manufactured by Arri Lighting. n. A type of memory lighting board (q.v.) manufactured by Arri Lighting. pr. In or into the stage area. Especially in flying (q.v.) where it means down. ( loc. Note that the A.D.C.'s iron (q.v.) rises when it comes in.) n. American for Lantern (q.v.) . n. See Bar, Internally Wired . n. 1. A metal iris placed in the gate (q.v.) of a profile spot (q.v.) to reduce the beam size. 2. A type of cyc. flood (q.v.) manufactured by Strand Lighting (q.v.) available singly or in battens (q.v.) . ref.~L.X. n. The Safety Curtain: A fire-resistant barrier which fills the proscenium arch. ( loc. The A.D.C.'s iron rises from the floor, as opposed to falling from the flies (q.v.) , and as such may be unique.) n. See Flying Iron . n. loc. synon. Podger . n. (outdated) A Cambridge Review Group of medical origins. n. Independent Theatre. n. Internally Wired Bar (q.v.) .Jack n. A type of plug used principally in sound systems consisting of a cylinder divided at one or two points along its length to form the different poles of the connector.
n. The correct term for a sausage coupler (q.v.) . n. Junior Treasurer (q.v.) . n. A now elderly type of dimmer rack (q.v.) manufactured by Strand Lighting (q.v.) , still in use in some places. n. An entrance onto the forestage (q.v.) , in the side wall in front of the proscenium arch (q.v.) . n. synon. Dropper . n. See Treasurer .Kabuki Drop n. A device consisting mainly of a long bar with short spikes sticking out of it at intervals of a few inches. It is hung below a flying bar (q.v.) , then a cloth (q.v.) is hung over its spikes, which are pointed upwards at this time. The system is arranged so that on pulling a rope or chain the Kabuki rotates so that its spikes point downwards, thus releasing the cloth to fall to the stage floor.
n. A tradename of a range of compact scaffolding couplers, which fit around the outside of the bars and are secured with grub screws. They are used to couple bars in situations where the standard couplers are unsuitable or too bulky, or to build permanent structures ( loc. e.g. the scene pit rail). n. A type of fake blood for use on stage. n. synon. I.E.C. Lead . n. synon. I.E.C. Plug . n. loc. synon. Podger .Ladder n. A scaffolding frame for supporting lanterns (q.v.) , shaped roughly like a ladder.
n. A scaffolding component, in the shape of a ladder. n. A vertical metal ladder. n. loc. See Camel . n. 1. Any stage light. The Americans use Instrument , the international term is Luminaire . 2. An opening in a roof. ( loc. In the A.D.C., there are such openings in the top of the fly tower (q.v.) , covered by remote control shutters operated from the prompt corner (q.v.) .) n. A place where lanterns are kept when not in use. ( loc. In the A.D.C., this is the O.P. Quad (q.v.) .) adj. A system used on memory lighting boards (q.v.) to determine which section of the system should have control of any given channel (q.v.) : under this system it is the last section to select that channel for some operation ( e.g. a fade (q.v.) ) which has control. This is the system used on Strand Lighting (q.v.) Gemini and Galaxy boards. n. Lighting Designer (q.v.) . n. A type of digitally controlled dimmer rack (q.v.) manufactured by Strand Lighting (q.v.) . See Jump Lead . n. A type of multipole mains connector, often used on the ends of mains multicores (q.v.) used for lighting. n. A lighting equipment company who make mainly film and T.V. equipment, and are best known in theatre for their range of gel (q.v.) . pr. See Stage Left . n. Black drapes used for masking. ref.~mask. n. A type of profile spot (q.v.) manufactured by Strand Lighting (q.v.) , and much used by American lighting designers (q.v.) . n. The metal projection which houses the lens(es) in a profile spot (q.v.) . Some types of profile will accept interchangeable lens tubes to give different beam sizes. n. loc. A transitory company formed by some A.D.C. technicians (q.v.) in order to light May balls. n. A lighting effect in which a number of highly collimated light sources are shone straight down or across the stage, so that the scattered light from dust or smoke in the atmosphere gives the effect of an opaque "curtain''. n. A powerful type of memory lighting board (q.v.) , manufactured by Strand Lighting (q.v.) . ( loc. As used at the Arts Theatre (q.v.) - now replaced with a Strand Lighting 430.) n. A type of memory lighting board (q.v.) manufactured by Strand Lighting (q.v.) . See appdix B. n. A horizontal scaffolding pole supporting lanterns (q.v.) . May be an internally wired bar (q.v.) or a gash bar (q.v.) . On Stage lighting bars are numbered from the proscenium arch (q.v.) back, starting at one. ref.~L.X. synon. Lighting Desk. n. A device that is connected to one or more dimmers (q.v.) , often remotely, in order control the output of each dimmer channel (q.v.) . Modern versions may also control other lighting equipment such as colour changers, moving lights or other stage equipment. cf. Memory Lighting Board and Manual Lighting Board . ref.~L.X. n. The control room from which the lighting is controlled, usually in the back wall of the auditorium. n. The person responsible for designing the lighting of a production. ref.~L.X. n. Any place in a theatre equipped for the hanging (q.v.) of lanterns (q.v.) . ref.~L.X. n. A set of light levels for all of the lanterns (q.v.) in the rig (q.v.) , to produce a required pattern of illumination on stage. ref.~L.X. The journal of Strand Lighting (q.v.) , formerly Tabs . n. synon. Follow spot (q.v.) . Also v.t. To operate a follow spot. n. The lighting control room, and/or position of follow spots (q.v.) . n. See Idiot Line. n. A number of ropes or cables running over pulleys in the grid (q.v.) , and coming down at evenly spaced intervals across thestage, in a line parallel to the proscenium arch (q.v.) . Used to support a barrel (q.v.) and whatever flying piece (q.v.) might be hung therefrom. Typically there are many line sets, spaced at about nine inches; they are usually numbered from the proscenium arch back. ( loc. There are four lines per set in the main grid, in order they are: the long (coming down farthest from the fly floor), the far mid , the near mid and the short (coming down nearest the fly floor). Line sets A,B,C and D at the back of the stage only have three lines each: the long, the mid and the short.) ref.~fly. n. A type of line set (q.v.) in which a flying barrel (q.v.) is permanently attached to the ends of a set of wires which run over pulleys in the grid (q.v.) and thence down to a cradle (q.v.) in which steel weights are placed so as to provide a counterweight to the the flying piece (q.v.) attached to the barrel. Also attached to the cradle is a control line (q.v.) , which passes through a brake block (q.v.) on the fly rail (q.v.) . The flying bar is moved by pulling on the control line, and locked in position with the brake. ref.~fly. n. A type of line set consisting of a number of hemp ropes passing over pulleys in the grid (q.v.) and thence to the fly floor (q.v.) where they are tied off to a cleat (q.v.) . n. See Spot Line . n. See Standing Line . n. See Working Line . n. See Flying . n. synon. Loading Gallery . n. The gallery in a counterweight flying system (q.v.) which is at a level such that the cradles (q.v.) are accessible from it when they are at top stop (q.v.) . Weights are added to or removed from the cradles from this gallery until the weight of the cradle matches that of the flying piece (q.v.) . ref.~fly. n. An independent (usually mains) power supply. ( loc. There are 15A local power outlets in the lighting patch (q.v.) , used for flashing up (q.v.) .) n. A type of large dry ice (q.v.) machine, requiring 63A at 240V. n. See Line Set . n. synon. Hinge Pin . See Pin Hinge . n. loc. The shutters covering the lantern (q.v.) in the top of the fly tower (q.v.) . They are controlled from the prompt corner (q.v.) , and open automatically if the fire alarm goes off. n. Lighting and Sound International, the journal of P.L.A.S.A. (q.v.) . n. loc. Abbreviation of Let There Be Light. adj. Latest Takes Precedence (q.v.) . n. A type of 15A round pin adaptor for connecting two or more plugs to one socket. n. International term for Lantern (q.v.) . n. Electrics, usually lighting. (q.v.) to gash bars (q.v.) and also to hold tails not in use in coils. n. A type of manual lighting board manufactured by Strand Lighting (q.v.) .M. and L. n. loc. Manager and Licensee.
n. A type of memory lighting board manufactured by Strand Lighting (q.v.) . ( loc. One of these was to be found in Queens' Fitzpatrick Hall, now replaced by a 520.) n. loc. synon. Angle Grinder . n. The tradename of a type of aluminium bodied torch, much used by theatre technicians. The small sizes fit easily in a pocket, the large ones double as offensive weapons. n. synon. Theatre Manager . n. The person responsible for the front of house (q.v.) staff and the audience. n. The person responsible for the administration of a production. n. A person permanently associated with a theatre, in charge of, and charged with knowledge of, all backstage and technical equipment. n. The person responsible for the stage and all those on it during a show. Usually also the person who Calls the Show (q.v.) . n. The person with overall responsibility for the running of a theatre. n. Usually means a manual lighting board (q.v.) . n. The type of lighting board (q.v.) on which the level of each dimmer channel (q.v.) is controlled by one or more faders (q.v.) directly. Usually has a number of presets (q.v.) , each of which contains one fader for each channel. A lighting state (q.v.) has to be manually set up by the operator on a preset each time it is required. cf. Memory Lighting Board . ref.~L.X. n. A prestigious Cambridge drama society. Usually performs at the Arts Theatre (q.v.) . n. A small electrically detonated explosive charge which produces a loud bang. Usually detonated in a bomb tank (q.v.) . They come in a selection of sizes: small, medium, large, giant, and super giant. ( loc. It is very rare and VERY loud to use either of the giant sizes in a venue the size of the A.D.C.) 1. v.i. A wing (q.v.) is said to mask if no part of the audience can see into it. 2. v.t. To place a masking device (masker (q.v.) , border (q.v.) , etc. ) so as the block the audiences view of something. ref.~mask. n. A flat (q.v.) placed at the side of the stage to prevent the audience seeing into the wing (q.v.) ref.~mask. n. All the equipment used to limit the audience's view of the stage area. ref.~mask. n. A fader (q.v.) used to control the level of a set of subordinate faders. Typically on a lighting board (q.v.) or mixer (q.v.) . n. See Group Master. n. Miniature Circuit Breaker. See Circuit Breaker . n. Usually means Memory lighting board (q.v.) . n. The type of lighting board with a built in computer system which stores the lighting states (q.v.) for a show during the plotting (q.v.) session, so that they can be easily recalled for each performance of the show. The more advanced ones have many other facilities, such as automatic fades, special effects, programmable groups (q.v.) , etc. Memory boards are now much more common than manual boards in professional venues. ref.~L.X. n. loc. The large industrial dustbin in the theatre yard. n. Abbreviation of Microphone. n. A type of microphone which does not require a trailing cable, but instead transmits its signal back to a dedicated radio receiver. Hand held types are usually self contained, while miniature units which can be concealed in costume or even about an actor's face have a separate transmitter belt pack. n. A type of highly directional microphone, i.e. it picks up sounds from one direction only. n. A type of directional microphone having a pick-up pattern slightly wider than a rifle mic. (q.v.) . n. A type of directional microphone having a pick-up pattern even tighter than a rifle mic. (q.v.) . n. See Line Set . n. A small indicator light whose status mimics that of some other system, e.g. loc. the house lights (q.v.) mimic on the stage manager's (q.v.) desk shows the brightness of the house lights. n. A display on a visual display unit, usually generated by a memory lighting board, showing the levels of lighting dimmer channels (q.v.) . v.i. loc. (outdated) 1. To take unnecessarily long over some task. 2. To walk about on stage during focusing (q.v.) or plotting (q.v.) to enable the lighting designer (q.v.) better to appraise the lighting. n. loc. (outdated) One who is inclined to mince (q.v.) , or a general insult. n. A type of dimmer (q.v.) system comprising portable six channel (q.v.) racks (q.v.) and manual boards (q.v.) . A later version was Mini 2+ . Manufactured by Strand Lighting (q.v.) in the late 1970s (?). Racks are almost indestructible, but heavy. n. A tradename of a type of miniature truss (q.v.) . n. A family of 300W or 500W lanterns (q.v.) manufactured by Strand Lighting (q.v.) . They are quite small, though inefficient. The family includes a fresnel (q.v.) , a P.C. (q.v.) and a profile spot (q.v.) . n. A family of 500W or 650W lanterns manufactured by C.C.T. Lighting. The family includes profile spots (q.v.) , a fresnel (q.v.) , a P.C. (q.v.) , and floods (q.v.) . n. A type of memory lighting board (q.v.) manufactured by Arri Lighting (q.v.) . n. A large sphere (usually a foot or more in diameter) covered with small mirrors. When light is shone at it and it is rotated, it reflects many moving spots of light. n. An electronic control desk for amplifying, modifying, combining and routing sound signals into one or more output signals. Usually classified as number of input channels into number of main groups (q.v.) into number of output channels , e.g. 24 into 4 into 2, or number of input channels into number of main groups (q.v.) if these are the only outputs. n. A single input or output signal path in a mixer (q.v.) . n. A large mixer (q.v.) , usually with more than about 24--36 input channels (q.v.) , and often free standing. n. The tradename of a type of self gripping wrench manufactured by Stanley Tools, also used to mean any self gripping wrench. n. A type of large (5kW?) lantern (q.v.) used in rock lighting. n. A thick cable with the wires for a number of individual signals running down it. May have multipole connectors (usually socapex (q.v.) or lectriflex (q.v.) ) at the ends, or a number of plugs at one end, and (when new) the same number of sockets at the other. n. A multicore for carrying multiple mains supplies. n. A multicore for carrying multiple audio signals. ( loc. The A.D.C. has a permanently installed sound multicore running from the sound shelf (q.v.) to the rear of house sound position.) v.t. To combine two or more signals into a single signal, in such a way as the originals can be recovered by demultiplexing . Often used to send many signals down a single cable, for example in lighting control where data about the levels of all dimmer channels (q.v.) is sent from the lighting board (q.v.) down a single cable then demultiplexed into one signal for each dimmer (q.v.) at the dimmer racks (q.v.) . Also n. , a multiplexed signal. v.i. loc. (outdated) To display advanced emotional disturbance or general ill temper. n. loc. A small subterranean store under the scene dock (q.v.) . Accessed from the scene pit (q.v.) . n. loc. That part of the museum (q.v.) which is connected to the rest of the world by a single doorway. n. loc. The "lobby'' to the inner museum (q.v.) , an underground extension to the scene pit (q.v.) . n. Abbreviation of Multiplex (q.v.) . n. A type of simple memory lighting board manufactured by Strand Lighting (q.v.) .Nadger v.t. loc. To render something unusable for the purpose for which it was designed.
adj. Neutral Density (q.v.) . adj. A type of gel (q.v.) which attenuates all optical wavelengths equally, with the result that it changes only the intensity of light passed through it, not its colour. n. A 1kW flood (q.v.) manufactured by Strand Lighting (q.v.) . n. A type of dimmer channel (q.v.) which is either fully on or fully off, never in between. Used to control loads which cannot be dimmed e.g. motors, fluoros, etc. n. National Student Drama Festival. n. National Student Theatre Company. n. An alternative lens tube (q.v.) for a Strand Pattern 23 (q.v.) lantern (q.v.) . A Patt. 23 fitted with such a tube is known as a Patt. 23N. The N stands for narrow, since the beam from a Patt. 23N is smaller than that from a standard Patt. 23.Pack, Flat n. A horizontal stack of vertical flats (q.v.) where they are stored. ( loc. The A.D.C. has two, the Large Flat Pack in the scenery pit (q.v.) , and the Small Flat Pack in the scene dock (q.v.) .)
n. An organized pile of treads (q.v.) where they are stored. ( loc. In the A.D.C., this used to be in the outer museum (q.v.) , but was moved to the yard (under the auditorium) for easier access.) n. An attenuator, usually as part of a mixer (q.v.) . n. An archaic type of lantern (q.v.) , a type of beam light (q.v.) . loc. synon. Lighty-up dustbin , because they consist of a metal can about the size of an office dustbin, with a reflector at the back and a light bulb inside, and that's it. n. See Dock, Paint . n. See Stage Paint . v.t. , n. To connect two or more lanterns (q.v.) to a single dimmer channel (q.v.) , or the lanterns (q.v.) so connected. Precision Automated Luminaire System. A tradename of Strand Lighting (q.v.) , a system for converting standard theatre lanterns (q.v.) into intelligent remote controlled moving lights by motorizing the relevant bits and adding control logic. Makes them expensive, delicate and heavy but very flexible in use. v.i. 1. To alter the apparent horizontal position of the beam from a lantern (q.v.) , or of a sound source. 2. n. A control on a mixer (q.v.) to control how much of a sound goes to each of two outputs. Used to move the apparent position of that sound within a stereo image produced by two (or more) speakers. n. (outdated) A theatre sound effects and public address system. n. A company making powerful projectors and follow spots (q.v.) . n. See House Lights Panic . n. loc. See Pit, Panto . n. A type of "lazy tong'' lantern (q.v.) suspension system in which the height of the lantern may easily by varied. Often found in T.V. studios, hardly ever in theatre. n. Parabolic Anodised Reflector, a type of sealed light bulb with an internal reflector. It requires no further optics to produce an elliptical beam of light, so is in general a relatively efficient stage light source, but it is not very controllable since the beam is of fixed size. Usually housed in a PAR can (q.v.) or floor can (q.v.) . When the term is followed by a number, e.g. PAR64, the number indicates the diameter of the bulb in units of eighthes of an inch. n. A type of lantern (q.v.) basically consisting of a metal cylinder with a yoke (q.v.) , a PAR lamp at one end and suitable electrical connections. It usually also has gel runners (q.v.) at the open end. ref.~L.X. n. A horizontal metal bar fixed to the top of a vertical stand to support one or more lanterns (q.v.) at each end. synon. Tee Bar . n. See Door, Pass . n. A passage which is required to be kept clear so that it may be used to evacuate the building in case of fire, usually a minimum of three feet wide. In particular, there must be clear passages down each wing (q.v.) of the stage. It is a legal requirement to maintain clear fire passages whenever the public are in the theatre. ( loc. There must be a clear fire passage through the scene dock (q.v.) from the cat ladder (q.v.) to the stage to the dock doors (q.v.) , and also from the dock doors to Park Street.) v.i. To make the necessary connections across a patch board (q.v.) . n. synon. Patch Board , usually meaning a large example. ( loc. In the A.D.C., this usually refers to the lighting patch on the bridge (q.v.) .) n. An array of sockets and/or plugs which may be interconnected so as to flexibly route signals from one place to another. Usually used as part of a sound system, or to connect dimmer (q.v.) outlets to lanterns (q.v.) . ( loc. The A.D.C.'s sound patch board is on the sound shelf, the lighting patch board is on the bridge (q.v.) .) n. synon. Lighting Patch . n. The interconnections between the dimmer (q.v.) outlets and the lanterns (q.v.) in the rig (q.v.) . ( loc. In the A.D.C., it's on the bridge (q.v.) .) n. synon. Patch Board . n. A matrix of sockets found in some lighting systems into which special pins may be inserted, to control which dimmer channels (q.v.) are controlled by which outputs from the lighting board (q.v.) . n. A room which houses a patching system, usually a lighting patch. ( loc. In the A.D.C., this term is now used to describe the bridge (q.v.) above the proscenium arch which was closed off during 1991.) n. The table held in the memory of a memory lighting board (q.v.) which defines the correspondence between control channels and dimmer channels (q.v.) . n. A patch panel (q.v.) used to interconnect components of a sound system. ( loc. On the sound shelf (q.v.) and in the sound box (q.v.) in the A.D.C.) n. See Pattern . (where n is a number) n. Refers to old Strand Lighting (q.v.) lanterns (q.v.) which did not have names as such, but were known by their Pattern numbers . Almost invariably abbreviated to Patt. Examples are Patt. 23, Patt. 264, etc. n. Pebble Convex, a type of lens with a stippled surface to provide some diffusion, or a type of lantern (q.v.) employing such a lens. Such lanterns provide a more controlled beam than their fresnel (q.v.) relatives, with less spill. Beware of ancient lanterns bearing the name PC: it was once used to mean Plano-convex, and these lanterns were prone to nasty optical aberrations. n. Phase Coherent Cardioid, a type a directional microphone. n. A device for lowering a basket containing dry ice (q.v.) into hot water so as to produce a low lying fog effect from the opening on its front. Basically a cross between a chip fryer and an overgrown kettle. n. A lighting position (q.v.) situated at the side of the stage, just outside the proscenium arch (q.v.) . n. See Parrot Perch . n. A movable tower in the shape of a triangular prism. Used for varying proscenium arch (q.v.) width. n. A type of dimmer rack (q.v.) manufactured by Strand Lighting (q.v.) n. PreFade Listen (q.v.) . n. A system in which a mixer (q.v.) sends D.C. power down its input lines to power microphones. Must be turned off at the mixer when other things are connected to the inputs! n. , v.t. A cue for a follow spot (q.v.) , or the action implied by such a cue: to start to illuminate a particular actor by switching on the follow spot while pointing it at him/her. n. A hinge whose central pivot rod is a removable hinge pin. Used in dismantleable scenery. n. See Coupler . n. See Shackle Pin . n. A small lantern using a PAR36 (q.v.) low voltage lamp to provide a near parallel beam. adj. Not level, not vertical or not at right angles. Generally applied to anything which is not pointing straight horizontally or vertically, and was meant to. n. loc. The Pantomime pit, a hybrid arrangement in which the forestage (q.v.) is divided into three parts, one open ( i.e. no stage, open orchestra pit), one flat and one stepped. This arrangement has often been used for the Pantomime in the past, hence the name. n. Abbreviation of Scenery Pit (q.v.) . n. A pit in which scenery is stored or painted, usually required in order to accommodate the height of large flats (q.v.) below the ceiling. ( loc. The A.D.C. has one in the scene dock (q.v.) .) n. loc. The brick protrusion into the stage area, upstage (q.v.) prompt side (q.v.) , behind which is part of the Pitt Club. n. The Professional Lighting and Sound Association. n. See Band and Plate . 1. v.i. To decide on and store (in the case of a memory lighting board (q.v.) ) or write down (in the case of a manual lighting board (q.v.) ) the levels of the dimmer channels (q.v.) for each lighting state in the show. 2. n. The complete record produced by this process. ref.~L.X. v.i. To plot (q.v.) without seeing the lighting state(s) (q.v.) which are being decided upon on the stage. n. The list of instructions to the lighting board (q.v.) operator to execute the required sequence of lighting states during a show. n. loc. The collapsible table which is placed in the centre of the auditorium and used by the lighting designer (q.v.) during plotting (q.v.) . v.t. To plug the correct droppers (q.v.) into the lighting patch (q.v.) sockets. n. Plum coloured tabs (q.v.) . n. loc. A small cyclorama (q.v.) used behind windows, etc. n. A scaffolding tool consisting of a bent metal rod about a foot in length with a tapered end. Used for tightening bands and plates (q.v.) . loc. synon. Knurdling Iron . n. A type of 1.2kW fresnel (q.v.) manufactured by Strand Lighting (q.v.) . Mostly used in film and T.V. lighting. adj. Refers to lanterns (q.v.) which are able to be focused (q.v.) by inserting a special pole in suitable orifices and rotating it. Useful when lanterns are inaccessible, and often used in T.V. studios. n. See Castor and Pollux . n. An audio amplifier for driving speakers. ref.~sound. n. See Bay, Power . n. A manufacturer of lighting stands, or one of their products. n. , adj. Describes any piece of equipment that is part of a set and is required to work. Common examples are table lamps, telephones, etc. n. A facility found on mixers (q.v.) to enable the operator to hear a signal (via headphones) without sending it to an output. n. A family of 500W or 650W lanterns manufactured by Strand Lighting (q.v.) . The family includes profiles (q.v.) , a P.C. (q.v.) , and a fresnel (q.v.) . n. A part of a manual lighting board (q.v.) a set of faders (q.v.) , one for each channel, on which a complete lighting state may be preset . Controlled by a master (q.v.) . ref.~L.X. n. The state of the set, lighting, etc. just before a show starts or restarts after an interval. n. A set of low power lights which give token illumination backstage during a performance. See also Secondaries . n. The overall term for the execution of a show. n. See Manager . n. Abbreviation of Profile Spot . n. A type of lantern (q.v.) capable of producing a tightly focused beam whose characteristics may be varied from hard edged to soft edged. n. The situation where the stage manager/prompter's position is stage right (q.v.) rather than stage left (q.v.) . n. The copy of the play that the prompter reads, including all the technical cues. This is the copy used to Call the Show . n. The downstage (q.v.) end of the prompt side (q.v.) wing (q.v.) , where the prompter and stage manager (q.v.) (who may be one and the same) usually sit. pr. The side of the stage on which the prompter usually sits, alias Stage Left . n. All the items that appear on stage and are too small to be classified as scenery. Almost invariably abbreviated to props. n. Abbreviation of Properties (q.v.) . n. Proscenium arch (q.v.) . n. The (usually rectangular) aperture in the boundary wall between the stage area and the auditorium. pr. Prompt Side (q.v.) . n. A type of fuse and its holder, often found on dimmer racks (q.v.) , in which once the holder has been extracted from its socket, it is pulled apart, off the fuse caps, to gain access to the fuse. n. Abbreviation of Pump-Action Screwdriver , a type of screwdriver that converts longitudinal force into rotation of the tip. n. The tradename of Strand Lighting's (q.v.) PAR cans (q.v.) . n. A scaffolding tube with a flattened end. n. 1. Abbreviation of Pyrotenax , a type of mineral insulated electrical cable. 2. Abbreviation of pyrotechnics (q.v.) . n. loc. The control unit for the pyrotechnics system. n. An electrically detonated pyrotechnic effect, encased in a disposable plastic cartridge. Used in Pyro Pods (q.v.) . n. The small metal box into which pyrotechnic effects cartridges are inserted, and to which the electrical detonation signal (which comes from the pyro controller or box (q.v.) ) is connected. n. A generic term for explosive special effects. n. Pressure Zone Microphone, a type of microphone which sits on a flat surface and has a wide pick up pattern.Q.A. Tower n. Quick Assembly Tower, a type of Access Tower (q.v.) . ( loc. The type owned by the A.D.C.)
adj. Quartz-Halogen (q.v.) . adj. Quartz-Iodine (q.v.) . n. 1. loc. The areas behind the juliet door (q.v.) , from which the pass doors (q.v.) lead onto the stage The O.P. (q.v.) quad is used to store lanterns (q.v.) and tail (q.v.) , amongst other things. 2. A manufacturer of high quality audio amplifiers, or one of their products. A type of truss (q.v.) manufactured by Lite Structures, having four bars rather than the more usual three. n. A family of 650W low cost lanterns (q.v.) manufactured by Strand Lighting (q.v.) . The family includes profiles (q.v.) , a fresnel (q.v.) and a P.C. (q.v.) . adj. A type of light bulb used in theatre lanterns, in which the envelope is made from quartz and the gas within contains a halogen. n. A type of light bulb having a quartz envelope and containing iodine. n. A range of lanterns (q.v.) manufactured by Strand Lighting (q.v.) using H.M.I. (q.v.) (or C.I.D. (q.v.) ) discharge (q.v.) PAR64 (q.v.) lamps.Rack, Dimmer n. A case containing a number of dimmers (q.v.) .
n. A structure holding a number of effects units (q.v.) , or other devices, as part of a sound system. ref.~sound. n. A large rack for storing tabs (q.v.) . (loc. The A.D.C.'s is in the green room (q.v.) .) n. See Microphone, Radio . n. A rail across the front ( i.e. auditorium side) of the orchestra pit. n. A rail over which the fly-lines (q.v.) in a hemp line set (q.v.) run. ( loc. There is one just above the hemp fly floor (q.v.) in the A.D.C. to prevent the lines from rubbing on the corner of the brick work). n. loc. The safety rail installed in the scene dock (q.v.) around the edge of the scene pit (q.v.) . n. The slope of a stage or auditorium floor, or the rostra (q.v.) used to create such a slope. n. See Gauze, Rat's Piss . n. Residual Current (circuit) Breaker with Overcurrent trip. A type of R.C.C.B. (q.v.) with overcurrent protection as well. n. Residual Current Circuit Breaker. A type of circuit breaker (q.v.) which will interrupt the supply if the currents flowing in the live and neutral lines are not equal. This situation usually indicates the presence of a leakage current to earth, hence these are sometimes known as E.L.C.B.s . n. Residual Current Device. synon. R.C.C.B. pr. The back of the auditorium. n. A type of portable 800W lantern (q.v.) manufactured by Strand Lighting (q.v.) and mostly used for T.V. work. n. See Stage Relay . n. See Manager . n. A type of wood bonding glue. n. A flap of hardboard of similar affixed to the inside edge of a flat (q.v.) , doorway, etc. to provide an illusion of depth. n. A short (q.v.) which has had the function of its two ends reversed. Produces a fly-line (q.v.) very close to the fly floor (q.v.) . See also Line Set . n. A section of the stage floor that can be rotated about a vertical axis, or sometimes a part of the set that rotates in this way. n. A tradename of Studer-Revox, who make tape recorders, or one of their products. Sometimes used (erroneously) to mean any open reel tape deck. n. See Microphone, Rifle . 1. v.t. To set up or install equipment for a show. 2. n. The complete configuration of lanterns (q.v.) or sound equipment in use. n. The process of turning on each lantern (q.v.) (via the switchboard (q.v.) and dimmers (q.v.) ) to make sure that they are all (still) working before a performance. n. A plan showing the position, gel (q.v.) colour, gobo (q.v.) (if any) and dimmer channel (q.v.) number of every lantern (q.v.) in the rig (q.v.) . ref.~L.X. n. One who rigs (q.v.) lanterns (q.v.) , or an abbreviation of Rigger's Control (q.v.) , or to mean a designer's control (q.v.) . n. A basic remote control for a memory lighting board which allows individual channels to be turned on or off to test the lanterns (q.v.) , patching (q.v.) , etc. n. A tool carried by a rigger (q.v.) or electrician (q.v.) while at work, used for almost everything from manipulating the various nuts and bolts found on lanterns (q.v.) and hook clamps (q.v.) to inserting or removing nails. It is usually an American or Swedish pattern adjustable spanner which is attached to ones belt when not in use to prevent it being lost or falling when its owner is working in elevated areas. pr. See Stage Right . n. loc. The large beam that runs all the way around the stage area at just above the fly floors (q.v.) . n. loc. A fictitious company, representing all of the A.D.C. technicians commercial or semi-commercial ventures. pr. Rear of House (q.v.) . n. A variant on a clove hitch (q.v.) with an extra turn, so arranged that it will not slide one way along whatever it is tied around. Useful when supporting non-horizontal things with ropes. n. A volume above the ceiling and below the roof. ( loc. In the A.D.C. they exist above the auditorium, the O.P. quad (q.v.) , the bar, and the green room (q.v.) .) n. See Green Room . n. A flexible translucent plastic tube inside which are small lights which may flash, chase (q.v.) etc. Used for tacky effects. See also Flexilite . n. A company who make stage equipment, most famous for their gel (q.v.) , scenic products and smoke machines. The term is also used to mean one of their products, usually gel. n. A type of widely used stage paint (q.v.) manufactured by Rosco (q.v.) . n. (Plural: rostra ) A portable platform, usually either 8 feet by 4 feet or 6 feet by 3 feet. They come in a variety of heights, usually multiples of six inches, and special kinds e.g. rake (q.v.) sections. There are two main types, the all wooden gate-legged in which a plywood top is placed on a folding wooden frame of the desired height, and the metal framed types, in which a wooden top is supported by a metal frame which stands on scaffolding tube legs. A common example of the latter type is Steeldeck . ( loc. The A.D.C. has a stock of six by three gate-legged rostra, with gate heights of six inches, 12 inches, 18 inches, 2 feet, 3 feet, 4 feet 6 inches and 6 feet.) n. See Ground Row . n. Abbreviation of Resident Stage Manager (q.v.) . 1. n. A line of drapes across the stage. ref.~tabs. \\ 2. v.t. To operate some technical aspect of aperformance: e.g. run the show , to stage manage a performance; run sound , to operate the sound system, etc. 3. n. A series of consecutive performances of a show, e.g. a one week run. 4. v.t. Of a show, to (continue to) be performed. n. synon. Dress Rehearsal. n. synon. Technical Rehearsal . The first rehearsal of a show on the stage after the get-in (q.v.) devoted entirely to technical matters. "Run'' is to some extent a misnomer, since they almost invariably very slow and tedious. n. Tabs (q.v.) which open and close horizontally, or the moving parts in a tab track (q.v.) to which the tabs (q.v.) are attached. n. The technicians required during a performance to operate the lighting board (q.v.) , sound system, move the scenery, etc. May be anywhere between 1 and 20 or more in number. n. See Plot, Running . n. See Rail, Running .Safety Chain n. A small metal chain attached to a lantern (q.v.) , or passed through its yoke (q.v.) , and then passed around the barrel (q.v.) supporting the lantern (q.v.) . Designed to prevent the lantern from falling should the clamp supporting it fail.
n. A type of cord, approximately a quarter of an inch in diameter, used in tab tracks (q.v.) and also to tie flats (q.v.) together. n. See Flying Saucer. 1. n. Abbreviation of scaffolding (q.v.) . 2. v.t. To erect or apply scaffolding (q.v.) . n. A collection of scaffolding tubes (q.v.) and clamps, possibly assembled into a structure. ref.~scaff. n. Metal tube of nominal diameter 48mm. It comes in steel and aluminium alloy types; the former is stronger but heavier. n. A generic term for any motorized lantern (q.v.) which is able to move its beam, in particular those that do it by means of an external pivoted mirror. n. A scenery storage and preparation area. ( loc. Situated directly under the stage in the A.D.C.) n. Abbreviation of Scenery Pit (q.v.) . n. See Pit, Scenery . n. A metal ring on the end a short screw thread. Often screwed into a flat (q.v.) to enable a stage brace (q.v.) to be attached to the flat via the ring. n. A type of colour changer (q.v.) whichoperates by passing a long scroll of gel between two rollers, one oneach side of the lens of the lantern (q.v.) to which it is attached. The scroll is usually made up of pieces of different coloured gels (q.v.) , and so the colour of gel in the lantern beam depends on the position on the scroll at which the device stops. n. A set of battery powered lights around a building providing token illumination in the case of a mains power failure. n. loc. A company formed by an ex-manager of the A.D.C. (Gary Ernest) to light May Balls. n. See Treasurer . n. A type of fabric from which tabs (q.v.) are often made. 1. v.t. To put something in its place on stage for a performance. 2. n. The arrangement of scenery, (q.v.) , etc. on stage. n. See Counterweight Set . n. See Hemp Set . n. A device which consists of either a plug connected to another plug of the same type, or a socket connected to another socket of the same type. If it is connected to something, it has the effect of changing a plug into a socket or vice versa, i.e. it changes the sex of the available connector. Usually found as part of sound systems. synon. Gender Bender . n. Scaffolding (Great Britain) Ltd., a company who manufacture scaffolding and scaffolding clamps. ref.~scaff. n. The U-shaped piece of metal that is used in conjunction with a shackle pin (q.v.) (which closes the "U'') to attach things to flying wires (q.v.) . ref.~fly. n. A short metal pin, threaded at one end which screws across the open end of a shackle (q.v.) . Easily lost. n. loc. A conspicuous localized lack of illumination on stage, due to a lighting design error. n. loc. A dining society of past and present A.D.C. technicians. n. See Sound Shelf . n. A type of low floor stand for supporting lanterns (q.v.) , such that a lantern thereon is at shin height. n. See Line Set . n. See Line Set . n. See Reverse Short . n. See Microphone, Shotgun . n. A cloth (q.v.) which is used in place of the house tabs (q.v.) for a particular show. n. Small movable metal plates held in the gate (q.v.) of a profile spot (q.v.) , which may be used to shape the beam. n. A horizontal bar at the side of the stage or auditorium, running parallel or almost parallel to the wall. Usually a lighting bar (q.v.) . n. The masking flats (q.v.) and/or legs (q.v.) that hide the wings (q.v.) from the audience. ref.~mask. n. Light that is shone sideways onto actors from the wings (q.v.) . Also v.t. to apply sidelight to ref.~LX . n. A line on stage delimiting the area that cannot be seen by any member of the audience. Also the name of the journal of the A.B.T.T. (q.v.) . n. Common abbreviation of Silhouette (q.v.) . n. The trade name of a range of variable beam angle profile spots (q.v.) manufactured by C.C.T. Lighting. Usually followed by a number or numbers representing the average beam angle or range of beam angles in degrees, e.g. Silhouette 15/32 . n. Off-white irridescent tabs (q.v.) . ref.~tabs. n. A family of high power fresnels (q.v.) using H.M.I. (q.v.) lamps, manufactured by Strand Lighting (q.v.) . The family includes lanterns (q.v.) with power ratings of 575W up to 18kW. n. A type of memory lighting board, manufactured by Zero 88 (q.v.) . n. A type of glue, made from bone. Was once a major constituent of stage paint (q.v.) . Smelly. n. A large white sheet placed across the rear of the stage, and lit so as to resemble a sky, or sometimes a cloth (q.v.) painted to look like a sky. synon. Cyclorama . n. The shutters built into the gate (q.v.) of most follow spots (q.v.) designed to block off the beam in between follow spot cues (q.v.) . n. See Coupler . n. A long thin opening in the auditorium wall or ceiling behind which is a lighting position (q.v.) . n. Stage Manager (q.v.) . n. A type of microphone manufactured by Shure. Often used for vocal work. ref.~sound. n. Strand MultiPlex. A type of digital multiplex (q.v.) for lighting control, developed by Strand Lighting (q.v.) . Strictly, the version in use is S.M.X.2, since first version was found to have major bugs just before release and so was never actually used. Notable in that it is one of the few systems which are bidirectional. n. A hook whose opening is usually closed by a spring loaded hinged metal arm, as often found on the end of hemp lines (q.v.) . v.t. To dull a shiny or reflective surface to reduce reflections from lighting. n. A type of round multipole connector with a threaded locking collar. There are two distinct types, one for mains use and a smaller version for low voltage control applications. Both types are used in theatre, in particular the low voltage type for dimmer (q.v.) control, and the mains type for mains multicores (q.v.) . ( loc. The A.D.C.'s I.W.B.s used these connectors, but with non-standard wiring.) n. loc. Abbreviation of the Shaft of Darkness Club (q.v.) , or a member or meeting thereof. n. loc. The only official of the Shaft of Darkness Club, responsible for organizing its events. n. A type of follow spot (q.v.) manufactured by Strand Lighting (q.v.) . There are 2kW tungsten filament lamped and 1kW C.S.I. (q.v.) lamped versions. n. The process of testing a sound system. Usually noisy, and often unnecessarily so. ref.~sound. n. loc. A corruption of Sound Shell (q.v.) , now used in preference to the original form. n. loc. (outdated) The platform above the stairs to the stage area, where the sound operator sits ref.~sound. n. A type of locking connector designed for use on speaker cables. ( loc. As used on the A.D.C.'s speaker cables.) n. A lantern (q.v.) rigged (q.v.) for some special effect, usually to spotlight something of someone at a critical moment in the show. n. 1. A cylindrical metal peg which may be attached to a lantern (q.v.) to enable the latter to be mounted on a stand. 2. A metal cylinder with holes for pegs or bolts which fits into the end of truss (q.v.) and is used to couple two lengths together. 3. synon. Sausage Coupler . n. A type of large spigot, 29mm in diameter, commonly used in television lighting and also for supporting follow spots (q.v.) . v.t. loc. To temporarily jam the winding mechanism of the iron (q.v.) with a metal spike in order to prevent the iron rising. Typically done while one goes to apply the brake to the iron. Since the spike would prevent the iron from rising in an emergency, it must always be removed as soon as possible. n. synon. Windshield . n. A device enabling one signal to be split to two devices. Typically a 15A plug connected to two 15A sockets in parallel. Also a 15A plug connected to two 120V sockets in series, to run two 120V PAR cans (q.v.) on a 240V supply. ref.~L.X. n. A Spotlight (q.v.) . n. Any type of lantern (q.v.) which produces a localized, controlled beam of light. Common types are profiles (q.v.) , fresnels (q.v.) , and P.C.s (q.v.) . n. A specially installed flying line (q.v.) , used by itself for a particular purpose. ref.~fly. n. See Profile Spot . n. An electrical device consisting of two (or more) mains plugs connected in parallel to socket. They are dangerous and illegal, but are occasionally used to spread a load across more than one mains outlet. n. loc. The mains power feed for the working lights (q.v.) and auxiliary equipment about the stage. n. A variation on a thrust stage (q.v.) in which the auditorium and stage form a wedge shape with the stage at the apex. n. See Brace . n. synon. Floor Cloth or sometimes synon. Cloth . pr. The left hand side of the stage, as seen by someone standing on stage facing the auditorium. system. ( loc. The power feed to the dimmer racks (q.v.) in the scene dock (q.v.) . See also Stage Ring Main .) n. See Manager . n. See Manager . n. loc. The boom (q.v.) above the stage manager's desk. n. A proscenium stage without the proscenium arch. (!) n. Paint for use on scenery, now usually Roscopaint , a proprietary product. Was once a fluid consisting of powder paint and/or whiting (q.v.) , size (q.v.) and hot water, which solidified when cold. n. A loudspeaker system for broadcasting the sound from the stage to various parts of the building. n. The right hand side of the stage, as seen by someone standing on stage facing the auditorium. n. loc. The mains supply to the dimmer racks (q.v.) on the bridge (q.v.) . See also Stage Main . n. The weekly journal of U.K. Theatre. Now amalgamated to form The Stage and Television Today . n. A stage arrangement in which the playing area includes a tongue thrust out into the auditorium with the audience on three sides. May be either an extended forestage (q.v.) in a proscenium theatre, or a special form. n. See Weight . n. A remote control for a (usually memory) lighting board (q.v.) , offering most if not all of the facilities of the main switchboard, but designed to be used in the stalls during plotting (q.v.) . n. A rope or wire attached directly onto the grid (q.v.) , or any other fixed point. n. A family of lanterns manufactured by C.C.T. Lighting. The family includes fresnels and P.C.s in 1kW, 2kW and 2.5kW ratings, as well as 1kW floods (q.v.) and an effects projector. n. See Lighting State . n. A common kind of metal framed rostrum (q.v.) manufactured by Parsons, using scaffolding tube legs. Standard sections are 8 feet by 4 feet. n. A now elderly kind of dimmer rack (q.v.) manufactured by Strand Lighting (q.v.) , but still in use in some places. n. loc. The A.D.C.'s Hilti (q.v.) masonry drill, a device for making holes in walls quickly. n. A store room for electrical spares e.g. light bulbs. ( loc. The A.D.C.'s electrical store is now split between the resident stage manager's office and the sundries cupboard (q.v.) . It used to be next to the club office.) n. loc. (outdated) synon. Electrical Store . n. See Bottle Strainer . n. A large international lighting company, based in Isleworth. They are the largest supplier of theatre lighting equipment in this country, manufacturing everything from gel (q.v.) to the Galaxy (q.v.) memory switchboard system (arguably the most powerful available). Established early this century, they were originally known as Strand Electric, then became Rank Strand before the latest name change to Strand Lighting. Strand Lighting Website v.t. To remove any item from the stage during a performance, or to remove the set and lighting rig (q.v.) as a whole at the end of a run (q.v.) . Also n. The action of clearing the theatre in this way after the last performance of a show. n. loc. Selective Uplight (q.v.) . n. A compact flood light, often used as a working light (q.v.) . n. loc. (outdated) synon. Sun Gallery . n. (outdated) An archaic term, meaning a gallery above the stage right (q.v.) wing (q.v.) , just behind the proscenium arch (q.v.) . It's counterpart in the P.S. wing was called the Moon Gallery . ( loc. This term was in use until the end of the 1980s, when the gallery was removed in order to install the counterweight fly floor (q.v.) .) n. loc. A store cupboard in the A.D.C. boiler room where spare light bulbs, gaffer tape, wood screws etc. are kept. Only the staff have keys to it. n. loc. Abbreviation of Sun Floods , usually the permanently installed ones used as working lights (q.v.) in the auditorium and switched from the prompt corner (q.v.) . n. A type of high temperature resistant gel (q.v.) manufactured by Rosco (q.v.) . n. A type of intelligent articulated luminaire (q.v.) manufactured by Clay Paky (q.v.) . n. A small book containing samples of a manufacturers range of some product, often gel (q.v.) ( synon. Gel Book ) or scenic products. n. A mains power supply driving sockets in the stage area, which may be switched on and off remotely. ( loc. In the A.D.C., there are 3 switch circuits called A, B, and C. They are controlled from the Lime box (q.v.) , and their outlets are 15A sockets on the bridge (all 3) and the hemp fly floor (q.v.) (A and B only).) n. An ancient form of lighting control board (q.v.) , but the term is still used to mean any lighting board. n. See Coupler .Tn (where n is a number) n. A type of "Theatre Class" bulb, used in lanterns. Common examples are T1, T11, T29 , etc. cf. CP n .
n. A type of 1kW profile (q.v.) made by Strand Lighting (q.v.) . They are heavy, but have good performance. There were two types, the T64 fixed angle and the T84 zoom. n. A heavy duty draw-string curtain rail for holding up runners (q.v.) . ref.~tabs. n. See Warmer, Tab . n. Stage curtains or drapes. Also the former title of the Strand Lighting (q.v.) journal, now called Lights! . n. A tradename of D.H.A. (q.v.) describing a device which holds a gobo (q.v.) within a gobo holder (q.v.) and has a handle which allows the gobo to be rotated while in a lantern (q.v.) . n. A generic term for electrical cables, especially 15A extension cables. Also v.t. , to connect using such cables. ref.~L.X. n. To connect a lantern or lanterns (q.v.) to a dimmer (q.v.) outlet or outlets with tail (q.v.) . (the show) v.t. To start a performance. n. The facility found on some mixers (q.v.) which allows the sound operator to speak over the sound system (often at great volume). Also sometimes a technicians intercom system. n. A telescopic tower on wheels up which one climbs; typically used to reach lanterns (q.v.) for focusing (q.v.) . n. See Bomb Tank . n. A metal plate with a tube welded onto it at right angles. The plate sits on the ground and the tube supports a vertical scaffolding pole placed within it. n. Technical Director (q.v.) . n. synon. House Border . n. Abbreviation of Technician (q.v.) . Also Techie. n. See Run . n. loc. One who gives gratuitous, unsolicited, unwanted and often erroneous advice. n. The person responsible for the building of the set and all technical matters for a production. This term is also used to mean the member of a dramatic society with responsibility for technical matters. n. loc. The person nominated by a show to be responsible for the safety of all technical matters associated with that show, and named as such on the theatre hire contract. n. Anyone who works backstage. n. synon. Parrot Perch . n. A high current electricity supply on stage for connection of temporarily installed equipment, e.g. large dry ice (q.v.) machines. n. A type of six channel dimmer pack (q.v.) and range of small manual lighting boards (q.v.) manufactured by Strand Lighting (q.v.) . v.t. To apply paint to scenery by dabbing or flicking techniques to obtain a textured finish. n. See Manager . n. A pyrotechnic effect which gives a bright flash accompanied by a puff of smoke and a bang. n. Timber of nominal dimensions 3 inches by 1 inch. v.i. To make great efforts to near zero effect, especially when attempting to move heavy objects. n. To secure a rope (or similar) to something immobile, typically a cleat (q.v.) in hemp flying (q.v.) . n. The metal grill in front of a lantern (q.v.) lens which prevents the lens falling out should it crack. v.t. See Hang, Top . n. An attachment for a PAR can (q.v.) to lengthen it and so reduce light spill. n. The borders (q.v.) and headers (q.v.) that hide the flies (q.v.) and flown (q.v.) items from the view of the audience. ref.~mask. n. See Rostrum . n. The physical stop in a fly frame (q.v.) which limits the ascent of the cradle (q.v.) . Also the position of a flying bar (q.v.) when its associated cradle is at top stop, i.e. the bar's minimum height. n. A wing flat (q.v.) just inside the proscenium arch (q.v.) . n. See Microphone, Torpedo . n. See Fly Tower . n. A type of access tower (q.v.) . The name stands for Quick Assembly . n. The device which holds and drives the film reels for a cinema projector. n. Technical Representative (q.v.) . n. loc. A set of keys to the stage and dock (q.v.) areas, issued by the theatre management to the technical representative (q.v.) for use during the get-in (q.v.) of a show. n. See Tab Track . n. Any opening in the stage floor. n. A trap (q.v.) running along the front of the stage, with a lid used to lock in the front edge of a floor cloth (q.v.) . Useful but rare. n. A mechanically operated trap, usually with a lift system below to allow people to appear from it as well as disappear through it. Now illegal. n. As in Hamlet. n. A man sized hole to allow the peremptory appearance of genii etc. Powered by counterweights, and covered by a number of flaps in the form of a star when closed. Quite lethal if flaps unlocked, and now illegal. n. A set of runners (q.v.) . n. loc. (outdated) synon. Electrical Store . n. See Coupler . n. See Pack, Tread . n. Portable stairs or steps, used for building into sets. n. A person responsible for a body's finances. ( loc. University societies must have two: a Junior Treasurer who is usually a student responsible for day to day matters, and a Senior Treasurer who is a don and has overall responsibility and authority.) n. A common type of truss (q.v.) having three bars arranged in an equilateral triangle. Manufactured by Optikinetics. n. A bunch of tails (q.v.) or a multicore cable (q.v.) , especially when attached to a lighting bar (q.v.) . n. Tough Rubber Sheath, the type of flexible mains cable used to make tails (q.v.) . Very hard-wearing, flexible down to low temperatures, and conveniently black. n. A piece of scenery on castors, or a low trolley used as a base for such scenery. Also v.i. To move on wheels (applied to scenery). n. A system of compound beams, usually made from aluminium alloy tubes (for low weight) braced together to form a rigid framework. There are several types, Trilite and Astralite are the most common. Truss is much stronger and more rigid than single scaffolding tubes, and so can be used to span larger distances and support more equipment (usually lanterns and speaker cabinets). n. An old (1970s) type of 1kW profile (q.v.) manufactured by Strand Lighting (q.v.) . n. See Lens Tube . n. See N-Tube . n. See Scaffolding . n. Timber of nominal size 2 inches by 1 inch. n. Timber of nominal size 2 inches by 2 inches.Universal Coupler n. See Coupler .
pr. Towards the back of the stage area. n. Ultra Violet light.Vari*lite n. An American company manufacturing intelligent articulated luminaires (q.v.) and control systems, or one of their products.
n. Video Distribution Amplifier. A device for sending a small number of video signals to many places. ( loc. The A.D.C. has one as part of the video relay (q.v.) system.) n. A type of cyc. flood (q.v.) manufactured by Lee Colortran. It has a very even light output, but is very delicate and so does not survive long in use. n. A system for relaying a video image of the stage to various monitors around the theatre. n. A voice, not coming from an actor on stage, put over the sound system. n. An unoccupied and usually inaccessible space. See Floor Void and Roof Void .Waggly Mirror n. A colloquial term for the type of intelligent luminaire (q.v.) which moves its beam by means of an external pivoted mirror.
v.t. To raise a large object to vertical by lifting one end overhead and then walking toward the other end lifting it further in the process, while someone else foots (q.v.) it. n. A lantern (q.v.) positioned and focused (q.v.) to illuminate a set of tabs (q.v.) , usually the house tabs (q.v.) . n. An even covering of light across an area of the stage, or the lanterns (q.v.) used to achieve it. v.i. loc. To mutter meaninglessly. n. See Base Weight . n. A flat square piece of cast iron with a handle in the middle, designed to be placed on the bottom of a stage brace (q.v.) to prevent it moving. Weight usually 28lb. synon. Small Stage Weight . n. An approximately cubic block of cast iron with a handle. Weight usually 56lb. synon. Large Stage Weight . n. The height to which cloths (q.v.) , borders (q.v.) , etc. are flown (q.v.) to enable the conduit (q.v.) weight to inserted into the pocket at the bottom. The bottom of the cloth ( etc. ) should be about four feet above the stage floor. n. Whistling was once used to cue (q.v.) the flies (q.v.) , hence the prevailing superstition about whistling on stage - it may have caused a heavy object to descend onto ones head. n. Chalk dust, a constituent of old-fashioned stage paint (q.v.) , or sometimes white or off-white stage paint. n. Power, especially volume of sound or intensity of lighting. n. A foam cover for a microphone, used to lessen the audibility of wind or breath hitting the microphone. synon. Spit Catcher . n. The space at the side of the stage, hidden from the view of the audience. n. synon. Masker . n. loc. A circular (power) saw. n. synon. Working Lights . n. The most convenient height for a flying bar (q.v.) to be worked on, about shoulder height or just below. n. General purpose lights, especially in stage area or auditorium. n. A type of primaries (q.v.) , coloured blue. n. A rope used temporarily to haul up or lower equipment. synon. Hauling Line . v.i. loc. (outdated) synon. Weeble . n. See Cyc. n. synon. Crowbar .X.L.R. n. A type of connector used in sound systems and also for some other applications. The most common type has three pins, but four, five and six pin versions are also encountered quite often.
Yoke n. The metal frame that connects a lantern (q.v.) body to the hook clamp (q.v.) or spigot (q.v.) supporting it. Part of the lantern.
appendices