Passive Speaker
A speaker that requires an external amplifier in order to produce sound.
Back of a passive speaker. You can see the 2 ports for the Speakon connectors.
Archives
Setting Line (Plaster Line)
Line normally parallel to the front of the stage and just upstage of the house curtain, from which the positions of the scenery are measured.
Props
Props is an abbreviation of “properties”. Props are any items used by actors on stage (other than scenery or costumes).
Prompt Side (PS)
Abbrev. to PS. The left hand side of the stage as viewed by the cast facing the audience. Also known as Stage Left, Camera Right.
Profile Spot (Profile)
A spotlight which projects a profile or outline of any chosen shape and with any desired degree of hardness or softness of edge.
Piggy Back Plug
A type of 240 volt mains plug that also has a socket on the back to allow additional plugs to be added.
Phantom Power
A way of sending a voltage, usually 48v DC, to a device such as a microphone down the same cable that carries the audio signal from the device. Many sound desks have phantom power facilities built in, or a separate unit can be inserted into the microphone circuit as required.
Par Bar
Metal bar on which is hung a group of Par Cans – usually 4. Used to simplify lighting rigging – instead of each light having to be hung individually, groups can be attached.
