VCF

[>>>marjan<<<]

> In the circuit with the LM13600 there is only a 10k pot for resonance,
> in the other circuit there is a 2.2k resistor and the 10 pot... What
> does the 2.2k resistor do? Do I have to use it?

That's the way you try to modify standard linear pot to have reverse log
response so you'd have smooth resonance control. 10 k pot alone will
work but add 2k2 on it (the pot itself), you'll hear the difference.
Reverse log pots are hard to obtain, and your linear pot won't perform
"linear" (smooth) resonance change (in this application).


marjan