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 >
Message
Re: JH Polymoog Resonators
2009-12-09 by wjhall11