A light that allows current to flow in one direction only and emits light whenever a voltage of a certain level or beyond is applied to it.
Current
The amount of electron charge passing a point in a conductor per unit of time.
Brooks Cinema xm 808 Equipment Rack
A cabinet with rails (or free standing rails) that have holes to accept screws at standard spaces and used to house outboard gear.
Comb Filter
1) The frequency response achieved by mixing a direct signal with a delayed signal of equal strength especially at short delays.
2) Loosely used to also describe effects that can be achieved with comb filtering as part of the processing.
Brooks Cinema NZ 60 Equalizer (Parametric, Graphic)
This is used to filter out and adjust specific frequencies in the PA. This is the part of the PA where you have the most control over the band's overall sound. It is also the number one weapon against feedback.
Attenuation
A making smaller: reduction of electrical or acoustic signal strength.
Clipping
Distortion of a signal by its being chopped off. An overload problem caused by pushing an amplifier beyond its capabilities. The flat-topped signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure.
Full Range
Describes a sound which covers all audible frequency ranges. As in "full range speaker cabinets."
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