[sdiy] Outamp in?

klosmon klosmon at sbcglobal.net
Tue Apr 6 22:27:43 CEST 2010


Yes, I3 (according to the schematic) is another input to the final VCA 
opamp.

~G


Terje Winther wrote:
> In the original Oberheim SEM there is a 3-pin connection in the VCA 
> section, I1 to I3.
> I1 is VCA out, and I2 is ground, and both of these are used in the 
> standalone version as well as in the 2-voice, 4-voice and 8-voice 
> versions, so that is all good.
> However, I cannot find any reference to how I3 called "Outamp in" is 
> supposed to be used. It is a connection from outside of the SEM to 
> hook up just before the final buffer, but after the SEMs VCA control 
> (CA3080), so anything you connect here will not be controlled by the 
> SEM, just added to whatever is present on the output.
> Is there anyone who knows anything about this?
>
> Terje Winther
> terje.winther at wintherstormer.no
> http://www.wintherstormer.no/
>
>
>
>
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