Doepfer

The SSM Chip is a SSM2164, A VCA Chip for 4 exponential VCA's. Pretty 
high quality.

Doepfer could also just them for morphing or switching or to control 
the CV-Resonance. 




--- In Doepfer_a100@yahoogroups.com, "Tim Stinchcombe" <timothy@t...> 
wrote:
> --- In Doepfer_a100@yahoogroups.com, "waveform100" <googol@g...> 
> wrote:
> > I have the impression that the Morphing Filters VCA is pretty 
nice 
> and 
> > clean. I found a good (and expensive) VCA SSM-Chip on the PCB, 
but 
> I 
> > have no idea if thats for the VCA or for the complex filter, 
> without 
> > following the trace.
> > 
> > So, what IC did Doepfer use on that VCA?
> 
> I don't have that module, but the manual says the "filter design is 
> 100% analog (CEM chips)", so the SSM chip *may* be to do with the 
> VCA, as there are several dedicated SSM VCA chips. Adding 
> complication is that there are dedicated SSM filter chips, e.g. 
> SSM2044; and there also VCA chips, e.g. SSM2164, which could be 
used 
> either to make filters, or be used in the switching between the 
> filters. Which SSM chip is it exactly? If you tell us the actual 
chip 
> type, or indeed a complete list of chips in the module (perhaps off-
> list), it would be easier to identify their likely functions!
> 
> Tim