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C
CRESCENT WRENCH
(US) A open ended adjustable hand wrench originally produced by the Crescent
Tool Co. Known as a C-WRENCH.
CROSBYS
US for saddle and "U" cable clamps.
CROSS FADE
Bringing another lighting state up to completely replace the current
lighting state. Also applies to sound effects / music. Sometimes abbreviated
to Xfade or XF
CSI
(Compact Source Iodide) A high intensity discharge lamp. Most often used in
followspots, because it has a color temperature (approx. 4000K) close to
that of the tungsten halogen lamps.
CUE
The command given to technical departments to carry out a particular
operation. E.g. Fly Cue or Sound Cue. Normally given by stage management,
but may be taken directly from the action (i.e. a Visual Cue).
CUE LIGHT
System for giving technical staff and actors silent cues by light. Cue
lights ensure greater precision when visibility or audibility of actors is
limited. Sometimes used for cueing actors onto the set. For technical cues,
lights are normally now used just as a backup to cues given over the headset
system. In the UK, a flashing Red light means stand-by or warn, green light
means go. The actor / technician can acknowledge the standby by pressing a
button which makes the light go steady. In the US, a red light means warn,
and when the light goes off, it means GO. The UK system seems to be more
secure, but it depends what you're used to.
CUE STACK
Section of a lighting desk which allows a list of pre-plotted lighting
states to be "played back" on the push of a button. These lighting states
normally have fade times allocated to them. Lighting desks designed for
theatrical use will have this as the primary control, but a rock desk will
have more "hands on" control as a priority, only providing a cue stack for
occasional use.
CUE TO CUE
("Topping and Tailing") Cutting out action and dialogue between cues during
a technical rehearsal, to save time.
CUEING
There is a standard sequence for giving verbal cues :
"Stand-by Sound Cue 19" (Stand-by first)
"Sound Cue 19 Go" (Go last).
CURRENT
The flow of electricity (electrical charge) through a circuit. Measured in
Amperes (Amps).
CYC FLOOD
A floodlight, usually with an asymmetrical reflector, designed to light a
cyc or backcloth from the top or bottom. The asymmetric reflector helps to
throw light further down the cloth, producing a more even cover. In the US,
a flood at the top of the cyc is a CYC OVER, and a flood at the bottom is a
CYC UNDER.
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