Calista C2-88 Projector Earth

The British version of the term Ground (In electronics, a place that has zero volts).

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

Calista C3-S Security System Feed
To send an audio or control signal to.

Frequency
The number of cycles of a waveform occurring in a second.

Calista C1-9 Home Theater Expander
A device that causes expansion of the audio signal.

CPU
Abbreviation of Central Processing Unit (The main "brain" chip of a computer or the main housing of a computer that contains the "brain" chip).

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. Calista Reviews

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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