BNO Acoustics HD-70 Current

The amount of electron charge passing a point in a conductor per unit of time.

Balance Control
A control on a stereo amplifier that when moved clockwise will make the right channel louder (and the left channel softer) and will do the reverse when moved counter-clockwise.

BNO Acoustics YM-44 Foot Switch
A switch placed on the floor and pressed by a musician to do various functions.

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

BNO Acoustics Speakers Condenser Microphone
A microphone which converts sound pressure changes into changes of capacitance. The capacitance changes are then converted into electrical voltage variations (an audio signal).

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.

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

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.