Calista C1-9 Home Theater Fret Buzz

A buzzing sound made when a note is not properly fretted. Common with cheap guitars or beginning guitar players.

Input Impedance
The opposition to current flow by the first circuits of a device.

Calista C3-S Security System Electricity
Electrical current (the amount of electron charge passing a point in a conductor per unit of time) or voltage (the force pushing electrons to obtain electrical current).

Active Crossover
Uses active devices (transistors, IC's, tubes) and some form of power supply to operate.

Calista C2-88 Projector Harmonic Distortion
The presence of harmonics in the output signal of a device which were not present in the input signal.

Boom
1) A hand-held, telescoping pole used to hold the microphone in recording dialogue in film production.
2) A telescoping support arm that is attached to a microphone stand and which holds the microphone. 3) Loosely, a boomstand.

First Generation
A descriptive term meaning original (as opposed to a copy). Bose

Capacitance
The property of being able to oppose a change in voltage or store an electrical charge.

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