PCBs available for 1176-flavoured FET compressor w/ opamps - (almost) no wiring

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fripholm

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May 26, 2013
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I don't know what exactly you want to achieve with this circuit on breadboard. Don't you have my boards?

You shouldn't have to attenuate anything. This is taken care of by the input control. If calibrated correctly, the unit should start compressing at a certain level which means that the signal within the sidechain gets large enough to pass the diodes D1 and D2 which increases the DC voltage on the gate of the FET which in turn decreases the signal level on its drain.

FWIW, my mono unit starts compressing when the signal level at the drain is about 90mV pk-pk.
 

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