[sdiy] hot rod 2044, was Re: "Reviving" the CEM3396

[john mahoney]

Harry,
This 3372 trick (thanks, Rainer!) sounds like what you were suggesting
for the SSM2044, which is also a 4-pole VCF chip (not a multi-mode
filter like the 2040). Comments?
--
john


----- Original Message ----- 
From: "Rainer Buchty" <rainer at buchty.net>


> >Also, I've seen the tricks used in the Xpander to get a variety of
> >filter modes out of the 3372 (15 different modes with combinations
of
> >LP, BP, Notch and All Pass), and I was wondering if the same
circuitry
> >could be applied to the VCF in the 3396
> >
> >http://matrix-12.tripod.com/xpsvc26.jpg
> >http://matrix-12.tripod.com/xpsvc27.jpg
>
> I wonder if it'd work with a 3328 and/or 3379 as well? Or was it
just
> the costs of the additional 6 OPs, the 4051, 4053, and passive stuff
> which kept other synth manufacturers from using this neat circuitry?
>
> Rainer
>