Biasing JFets for Chop Shop

jonlucasman

New member
Hi,

New pedal builder here. First non kit build. Trying to understand how to Bias the JFets in the Chop Shop. I think in a very basic sense I have an understanding of what the biasing does. I am looking for a detailed explanation of how to do it.

From my understanding the Sag knob will reduce the voltage and that it should be biased around 6v's. I am wondering:

Where do I measure the bias: black to ground and red to ?
Should the sag knob be turned all the way up CW or all the way down CCW or in the middle when biasing?
Should the Volume or Gain knobs be set at a particular level?
Anything need to be plugged in to the input or output?
And of course anything else I may be missing.


Thank you. Appreciate it!
 
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