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Pre-fade The point in the signal path before a fader, and therefore unaffected by the fader
position.
Rolloff A fall in gain at the extremes of the frequency response.
Shelving An equaliser response affecting all frequencies above or below the break frequency
i.e. a highpass or lowpass derived response.
Spill Acoustic interference from other sources.
Transient A momentary rise in the signal level.
Unbalanced A method of audio connection which uses a single wire and the cable screen as the
signal return. This method does not provide the noise immunity of a balanced input
(see above).
+48V The phantom power supply, available at the channel mic inputs, for condenser micro-
phones and active DI boxes.