[sdiy] Odd? filter topology question #2

[Duane R Balvage]

> I am ressurecting from the dead, one Octave Cat synth (rev 1), and I had a
> question
> about the filter topology...
> 
> It appears to be a 4 pole filter composed of 4 CA 3080s (can type(!) ) 4 metal
> foil
> caps, and
> Fet buffers between each stage.
> 
> Is this some sort of 4-pole state-variable? Or am I missing something?


Other question: is it possible to tap off a 12db/oct response from this filter by
tapping in
at the 2nd integrator's buffer output?

			-Duane


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