Need info Bias Sandspur Fuzz

bzdunowski said:
I am close to finishing my Sandspur fuzz https://www.pedalpcb.com/product/pcb378/

with these BC108 https://www.taydaelectronics.com/bc108-bc108b-npn-small-signal-transistor.html

and I realized I have no idea how to do the bias. Could someone help or point me to the info
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Use the internal trim pot to set the lower limit of the external control, i.e. set the trimpot so that when the external control is completely off, bias voltage reads the lowest acceptable value for you.

As far as the actual bias voltage, I like my Silicon Fuzz Faces biased up closer to 6 vDC but it’s really a preference. Anywhere between 4.5 vDC and 6.5 vDC on Q2c will be a good start.
 
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You can do it using a DMM or by ear. I assume that you turn the bias trimmer fully CW then the sundial should be at 12 as a starting point. You can bias it by ear on the sundial trimmer to what sounds best to your ears.
 
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