Brooks Cinema Projectors Level

Sets output volume of individual PA input channels. Usually positioned as sliders at the bottom of the soundboard.

Clock Signal
The signal put out by a circuit that generates steady even pulses or steady codes used for synchronization.

Brooks Cinema Series Foldback
A European term for the signal sent to the stage monitors in a live performance.

AES/EBU
Professional Interface A standard for sending and receiving digital audio adopted by the Audio Engineering Society and the European Broadcast Union.

Brooks Cinema TX 509 Expander
A device that causes expansion of the audio signal.

Line Level
1) An amplified signal level put out by an amplifier and used as the normal level that runs through the interconnecting cables in a control room.
2) A low level signal such as the signal in a guitar cord. Most parts of a PA require a line level signal. Remember, however, that speaker outputs are not line level. Plugging speaker outs into line ins will result in damage to the equipment

Half Step
A pitch difference of the amount that is present between adjacent keys on a piano.

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.

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