Calista C3-S Security System Crossover, Passive

Used inside of full range speaker cabinets to separate highs, mids, and lows and send them to their respective speakers within the each cabinet. These are not as efficient as active crossovers because they require all frequencies to draw from the same source of amplification.

ADSR
The letters A, D, S &R are the first letters of: Attack, Decay, Sustain and Release. These are the various elements of volume changes in the sounding of a keyboard instrument.

Calista C2-88 Projector Horn
1) The part of the speaker that emits midrange and higher range frequencies.
2) A speaker or speaker enclosure where sound waves are put into a narrow opening (by a speaker cone or driver) and the narrow opening flairs out to a larger opening.

Bridge
The bridge assembly, or just "bridge" is an area on the face of the guitar where the string meet or are connected to the face.

Calista C1-9 Home Theater Compression Ratio
How many dB the input signal has to rise above the threshold for every one dB more output of a compressor or limiter.

Electromagnetic Field
Magnetic energy put out because of current travelling through a conductor.

High Impedance Mic
A microphone designed to be fed into an amplifier with input impedance greater than 20 k ohms. Bose

Ground Adapter Plug
Adapts a three pronged electrical plug to a two pronged wall outlet. This bypasses the ground and may create a hum in the system. A lack of a good ground can cause mild electrical shock when touching a microphone.

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