Brooks Cinema XB 33 Filter

1) A device that removes signals with frequencies above or below a certain point called the cut-off frequency.
2) An equalizer section, used in this sense because filters are used with other components to give an equalizer its frequency response characteristics.
3) The action of removing signals of some frequencies and leaving the rest.
4) A mechanical device to smooth out speed variations in tape machines called a Scrape Flutter Filter- more usually called a Scrape Flutter Idler

Crosstalk
Leakage of an audio signal into a channel that iris not intended to be in, from an adjacent or nearby channel.

Brooks Cinema QS - 95 Headroom
1) The level difference (in dB) between normal operating level and clipping level in an amplifier or audio device.
2) A similar level difference between normal tape operating level and the level where the distortion would be 3%.
3) The difference, in decibels, between the peak and RMS levels in program material.

BPM
An abbreviation of Beat Per Minute (the number of steady even pulses in music occurring in one minute and therefore defining the tempo).

Brooks KM 22 Fat
Having more than a normal amount of signal strength at low frequencies or having more sound than normal (by use of compression or delay).

Generating Element
The portion of the microphone that actually converts the movement of the diaphragm into electrical current or voltage changes.

Cable, TRS
A less common balanced cable that has 3 different contacts on its 1/4 inch connectors. Most headphone jacks are a good example of a TRS (Tip-Ring-Sleeve) connector. These are sometimes used instead of the more common XLR connection.

FOH (Front of House)
Refers to the speakers that face toward the audience. Also called the "main" speakers.