OK - now - Jurgen's circuit has only one input, so it looks to me like, for the input to be the proper polarity, the input mixer would be followed by a unity-gain inverter, right? Still plenty of room for that on the beadboard, just a matter of couple extra resistors and using a double OpAmp (TL072) rather than a single (TL071) sound right?
Also, going back over Will's notes on the Polymoog, he intended the "LINK OUT" to be a summed output of the 3 inputs like Dave Brown's implementation (Only Dave called it "MIX" which Will found a little confusing 'cause the OUTPUT is, after all, the mix of DRY OUT and RESON OUT.)
This LINK OUT jack is there so you could link a couple Polymoogs in tandem to the same summed inputs.
I don't know if this little diagram will come out -
INPUT 1 \ / RESONATOR
INPUT 2 MIXER > INVERTER
INPUT 3 / \ LINK OUT
Bill
--- In ModularSynthPanels@yahoogroups.com, Scott Deyo <contact@...> wrote:
>
> okay, should i add an extra two inputs or not to this panel? there is
> a prototyping area on the PCB to easily add a mixer -- dual op-amp, 6
> resistors, you're good. loads of room on the panel...
>
> Scott Deyo
> contact@...
> The Bridechamber
> www.bridechamber.com
> Jealous Edison Record Kompany
> www.jealousedison.com
>