Brooks Cinema Series Current

The amount of electron charge passing a point in a conductor per unit of time.

Earth
The British version of the term Ground (In electronics, a place that has zero volts).

Brooks XB 22 Error Correct
Exact replacement of lost information bits in digital audio.

Amplifier (Power amp, Head)
It's the part of the sound system that actually magnifies or "amplifies" the sound. In other words, it makes stuff louder.

Brooks KM 77 Aux Send
Short for the term Auxiliary Send (a control to adjust the level of the signal sent from the console input channel to the auxiliary equipment through the aux buss.

Gain
1) Knob usually found at the top of each input channel on the soundboard. Used to set input levels of the separate channels to relatively equal positions.
2) The amount of increase in audio signal strength, often expressed in dB.

Frequency Range
The range of frequencies over which an electronic device is useful or over which a sound source will put out substantial energy.

Kick (Kick Drum)
Another term for Bass Drum.