Doepfer

--- 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