Calista C2-88 Projector Bass

1) The lower range of audio frequencies up to approximately 250 Hz.
2) Short for Bass Guitar.
3) Lower end of the musical scale. In acoustics, the range (below about 200 Hz) in which there are difficulties, principally in the reproduction of sound, due to the large wavelengths involved.
4) The lower frequencies.
5) On the soundboard this should refer to the bass guitar channel, not the bass drum.
6) The lowest frequencies of sound. Bi-Amplification uses an electronic crossover or line-level amplifiers for the high and low frequency loudspeaker drivers.

Keying Input (Key Input)
An input on a dynamics processing device to control the device by an external audio signal.

Calista C1-9 Home Theater Level
Sets output volume of individual PA input channels. Usually positioned as sliders at the bottom of the soundboard.

CD (Compact Disc) :
1) Digital sound storage medium. Provides a high quality source of music, sound effects etc. Also used as a playback medium for sound effects etc. by large theatres with long running shows, although CDR (Recordable CD) is becoming more affordable by the day.
2) An abbreviation of the term Compact Disc (a small optical disk with digital audio recorded on it).

Calista C3-S Security System Central Processing Unit
1) The main "brain" chip of a computer that performs the calculations and execution of instructions.
2) The main housing of a computer that contains the "brain" chip as opposed to other pieces of the computer system such as keyboards, monitors, etc.

Keyboard Controller
A device that has the standard music keys of piano but puts out MIDI signals

Compact Disc, Read Only Memory CDROM
A Compact Disc used to store digital data, such as large programs, that can be read by a computer. Bose

Capsule
1) The variable capacitor section of a condenser microphone.
2) In other types of microphones, the part of the microphone that includes the diaphragm and the active element.

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