BNO Acoustics R-10 Impedance

1) A term for the electrical resistance found in a/c circuits. Affects the ability of a cable to transmit low level (e.g. sound) signals over a long distance. Measured in Ohms. Speakers are rated according to power handling capabilities (Watts, W) and impedance (Ohms).
2) The total opposition offered by an electric circuit to the flow of an alternating current of a single frequency. It is a combination of resistance and reactance and is measured in ohms. Remember that a speaker's impedance changes with frequency, it is not a constant value.
3) The opposition to alternating current.

Key
The control of a dynamics processing device by an external audio signal.

BNO Acoustics QT-5 Analog (Analogue)
Representative, continuous changes that relate to another quantity that has a continuous change.

Amplitude
The height of a waveform above or below the zero line.

BNO Acoustics HD-70 Aux Send
Short for the term Auxiliary Send (a control to adjust the level of the signal sent from the console input channel to the auxiliary equipment through the aux buss.

Ground
In electronics, a place (terminal) that has zero volts.

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

Electric Current
A more formal term meaning the same as the term Current (the amount of electron charge passing a point in a conductor per unit of time).