Yamaha CS80

This has been a long-standing project of mine, to make an M board 
using non-custom parts.  I know how to make the VCO & transposer; I know 
how to make the VCFs; I know how to make the EGs.  The only thing left 
is making the VCAs which, while the ostensibly the simplest, really need 
to exhibit the closest possible behavior to the IG00151 as the signal 
path of each board uses 4 of them.  (There are 6 on each board, but 2 of 
them are used by the EGs).

Crow
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blchrr@... wrote:
>
> I wonder if voice cards could be made that could be drop in replacements 
> based on discreet components? Juergen, Scott, Kent any of you guys think 
> that could be done? 
>
>