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The SOS Guide to Live Sound by Paul White

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Chapter EightEqualisers And Effects

 

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In the recording studio, equalisers come in many different forms, but in smallish live-sound setups the choice is usually limited to the equaliser you have on your desk channels, and maybe a graphic equaliser on the main outputs. Graphic equalisers are very commonly used in live sound as they are easy to set up and can apply a more extensive degree of equalisation than the usual desk EQ.

Equaliser circuits involve some active circuitry to enable them to selectively boost or cut parts of the audio spectrum relative to other parts, so you can think of EQ as being a kind of frequency-selective volume control, ...

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