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Cgs synth

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Message

Trying to get my Steiner filter to ring properly

2006-12-03 by Gerald Stevens

Hello,

I finally pulled my CGS35 out of the rack and took it to the garage to give
fixing it one more try. For the most part it works, but the resonance has
never seemed to give it a nice ringing sound. Looking at a its output with
a ~1kHz square wave into the LP input and the filter wide open, it looks
like the overshoot ringing at the top of the step is very high frequency
(10's of kHz). My question is - how is the resonant frequency determined?
Which caps and resistors play a role in defining the resonant self
oscillating frequency? I would prefer to keep this frequency audible.

-gerald


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