VC mixer

[Grant Richter]

>especially *voltage controlled mixer* schematics.  So far I only have 
>one using 3 CEM 3330's! (I generally prefer discrete designs).  I need 
>to order parts soon and would appreciate any ideas, or directions to 
>schematics on the net. I will accept attachments to personal email as 

Hi Steve,

You know Bernie Hutchins schematic for the ENS-76 VCA? The one that uses
two op-amps and a 3080. The output of the 3080 is a current going into a
summing node. Because of this you can just stack up 3080's going into
the same summing node to make a voltage controlled mixer. So, one final
op-amp to combine the currents and an op-amp and a 3080 for each channel.

Grant