[sdiy] Digisound SSM2040 filter mod advice.

[Keith Winstanley]

Hi all,

I have renovated a Digisound 80-7 SSM2040 based state variable filter
and all seem to work ok but I am really appalled at the resonance
on this thing. It makes only the slightest resonant bump on the
waveform. If I feed the signal back to one of the inputs them I get
a decent non-oscillating resonance on the four pole output but this
make not a bit of difference to the two pole output, probably
because of the way the signal is fed back in to the two filter
sections of the ssm.

Has anyone got any modification suggestions fro this module which
would improve the resonant abilities of this module- I have three
more which need renovating too but I would like better results
before I go any further.

many thanks in advance

regards..

Keith

http://home.freeuk.net/lowpass