BNO Acoustics TR-12 Centre Frequency

The frequency of the audio signal that is boosted or attenuated most by an equalizer with a peak equalization curve.

House Sync
A synchronization signal such as SMPTE time code that is used by all recorders in the control room.

BNO Acoustics QT-5 Highs
Short for the term High Frequencies (the audio frequencies from 6000 Hz and above).

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.

BNO Acoustics 6k-52 Line
1) Short for line level.
2) A cable.

Guitar Controller
An electric guitar or device played like an electric guitar that puts out MIDI signals that can be used to control synthesizers and sound modules.

Electromagnetic Field
Magnetic energy put out because of current travelling through a conductor.

Auxiliary Input or Return
A route back into the sound desk for a signal sent to a piece of outboard equipment via an auxiliary send.