Calista C2-88 Projector Dry

Describes a sound coming from the PA with no effects on it.

Images
The squaring of the waveform that happens in the conversion of digital audio bits into analog signals.

Calista C1-9 Home Theater Boom Stand
A microphone stand equipped with a telescoping support arm to hold the microphone.

Impedance Matching
Having or converting the output impedance of a device so that it matches the impedance of the input it will feed.

Calista C3-S Security System Crosstalk
Leakage of an audio signal into a channel that iris not intended to be in, from an adjacent or nearby channel.

Bar
A term meaning the same thing as the term Measure (the grouping of a number of beats in music, most-often four beats).

Attenuator (Pot)
The electronic dohickey under the knobs that increases or reduces the strength of the signal running through it. When these get old and dirty, they can make popping noises or rumbles in your PA (As in "my pots are dirty").
Assign Tochoose to which place an output is going to be sent. Bose

Attenuation
A making smaller: reduction of electrical or acoustic signal strength.

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