Calista C1-9 Home Theater Folded Horn

A speaker design where the speaker points back into the cabinet and bounces around finally coming out large ports in the front. It is intended to maximize low frequencies in a relatively small cabinet.

Circuit
1) One complete path of electric current.
2) Similar to definition 1, but including all paths and components to accomplish one function in a device.

Calista C3-S Security System Bi-Amplification
1) A way of optimizing the efficiency of a speaker system by separately amplifying the High Frequency (HF) and Low Frequency (LF) portions of the sound signal and sending them down two pairs of cables to the speaker. Multipin Speakon connectors have been developed to do this.
2)The process of having of having low-frequency speakers and high-frequency speakers driven by separate amplifiers.

Harmonics
Integer multiples of a fundamental frequency, the fundamental itself being the first harmonic, its first overtone the second harmonic, etc. Attributing to instruments, voices, etc. their distinctive timbre.

Calista C2-88 Projector Keyboard Controller
A device that has the standard music keys of piano but puts out MIDI signals

Error Message
A prompt on a computer screen telling the operator that an error has occurred.

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

Baffles
Sound absorbing panels used to prevent sound waves from entering or leaving a certain space

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