Book Flat
Two flats hinged together on the vertical.
Archives
Blinders
Audience blinders – high intensity flood lights mounted to focus on the audience. Turned on to create an impact on the audience and perhaps cover a scene change.
Data Flash (a traditional blinder)
LED Audience Blinder
Bass
The lowest end of the audible audio frequency spectrum.
Barn Door
Adjustable doors attached to the front of stage lanterns to control the area of light covered by a particular beam.
Balanced Line
An audio cable in which the two audio lines, positive (hot) and negative are kept electrically separate from the earth. A way of reducing hum and noise on the cable.
Bridle
A short length of cable or chain used to distribute the stress on a barrel at a suspension point.
Brail (Brail Line)
Line used to pull and retain any piece of hanging scenery or property from the position it would occupy if left hanging free.
Bleacher Seating
Stepped seating blocks which can be retracted for storage and to clear a flat floor.
