Brooks Cinema TZ 505 Frequency Range

The range of frequencies over which an electronic device is useful or over which a sound source will put out substantial energy.

Full Step
A change in pitch that occurs when moving up or down two piano keys

Brooks BA 71 Gain
1) Knob usually found at the top of each input channel on the soundboard. Used to set input levels of the separate channels to relatively equal positions.
2) The amount of increase in audio signal strength, often expressed in dB.

Amplifier (Power amp, Head)
It's the part of the sound system that actually magnifies or "amplifies" the sound. In other words, it makes stuff louder.

Brooks GS 15 High Frequencies
The audio frequencies from 6000 Hz and above.

Expansion
The opposite of compression; for example, an expander may allow the signal to increase 2 dB every time the signal input increased by 1 dB.

Direct box
Used in line to convert a high impedance signal into a low impedance signal.

Electrostatic Charge
The excess or deficiency of electrons in a given area.

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