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B
BLUES
Blue lights used backstage in a performance situation.
BNC / BAYONET NEILL CONSULMAN
Coaxial connector used for carrying a composite video signal or radio
frequency signal. BNC is also thought to stand for "Bayonet Nut Connector".
BOARD
The main control for the stage lighting. Originally known as the switchboard
or dimmerboard, it is now usually remote from the dimmers. The lighting
operator for a show is said to be "on the board", and is sometimes known as
the "board op".
Known in the US as the Light Board.
BOMB TANK
Metal bin or box covered with fine mesh in which Theatrical Maroons can be
safely detonated.
BOOM
1) Vertical scaffolding pole (usually 48mm diameter) on which horizontal
boom arms can be mounted, carrying lanterns. Often used behind wings for
side-lighting etc. Booms have a base plate (known as a TANK TRAP) or stand
at the bottom and are tied off to the grid or fly floor at the top (not
always necessary for short booms). Booms can also be fixed to the rear of
the procenium arch (Pros. Boom) or hanging from the ends of lighting bars.
Sometimes known in the US as a light tree. A light tree mounted upstage of a
Tormentor is known as a Torm Tree.
2) An arm mounted on a microphone stand.
BOOM BASE
A wooden board with vertical scaffold tube adaptor used as a base for
lighting booms. Although the base provides a degree of support (especially
with added brace weights) booms often require additional support from above.
BOOMERANG
Old name for a BOOM (vertical lighting position).
BOOTH
Control Room.
BORDER
A narrow horizontal masking piece (flattage or cloth), normally of neutral
color (black) to mask the lighting rig and flown scenery from the audience,
and to provide an upper limit to the scene. Often used in conjunction with
LEGS.
BOUNCE
1) Diffuse light that has been reflected from the stage, walls, cyclorama
etc.
2) "Bounce" is sometimes used for a flat (non-curved) cyclorama. Strictly, a
bounce is a white or light blue cloth onto which light is bounced to
backlight another cloth. A bounce doesn't need to be seamless, whereas a
cyclorama should be.
3) Describes the fast in/out movement of "bouncing" flown house tabs, used
during curtain calls. This can also apply to the fast blackout/lights up
cues that happen at curtain calls.
4) This facility is available on many multitrack tape machines. Describes
the mixing down of multiple sounds from different tracks onto one track,
hence freeing up the other tracks to be re-used. Allows many sounds to be
recorded onto one tape.
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