Calista C3-S Security System Input/Output Module

A set of controls, on one housing, for an in-line console that has two channels (one for recording and one for monitoring) and has controls for all console sections.

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

Calista C2-88 Projector Leakage
Sounds from other instruments and sources that were not intended to be picked up by the microphone.

File
A collection of digital data stored in a computer's memory bank or on a floppy disc.

Calista C1-9 Home Theater 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.

Linear
The condition of obtaining a change at the output of the device which is proportional to the change occurring at the input.

Balance Control
A control on a stereo amplifier that when moved clockwise will make the right channel louder (and the left channel softer) and will do the reverse when moved counter-clockwise. Bose

Compressor
1) Effect used to squash the sound together. Used properly, it can take the edge off or your sound. Used improperly, it can take the life right out of your system and make it sound like an MTV mix.
2) A piece of sound processing equipment that ensures all wanted signals are suitably placed between the noise and distortion levels of the recording medium. It evens out the unwanted changes in volume you get with close-miking, and in doing so, adds punch to the sound mix. A Limiter is used to stop a signal from exceeding a preset limit. Beyond this limit, the signal level will not increase, no matter how loud the input becomes. A Limiter is often used to protect speaker systems (and human ears) by preventing a system from becoming too loud.

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