I'm glad there are other sane people on this list that can help me get
through life.
Those are the samples I have. LOL - I will get to work on it straight
away.
Mike.
--- In korgpolyex@yahoogroups.com, "narfman96" <narfman96@...> wrote:
>
> The Maxim DS1660 is bipolar +/- 5 volt. Will this work? I read the
> Max5160 datasheet could it be used with an op amp for feedback
> control?
>
> --- In korgpolyex@yahoogroups.com, "korgpolyex800"
> <korgpolyex800@> wrote:
> >
> > Thanks for that Dave,
> >
> > The problem I'm having right now is choosing the right digital
> > potentiometer for the job. The versions that I got as samples from
> > Maxim are only 5Volt operation. No good for the Poly because the
> audio
> > is 10V (-5<->+5).
> >
> > Analog devices does one that is 10-30V but then the logic control is
> > difficult because it would "see" logic zero only at -5 volts which
> > doesn't match up the Poly either.
> >
> > I have the same problem with the FM mod too because you want to be
> > able vary the amount of DCO that is injected into the VCF. Once
> again,
> > the range is -5<->+5.
> >
> > So I am kinda scratching my head right now.
> >
> > Mike.
> >
> >
> > --- In korgpolyex@yahoogroups.com, "David Mochen" <davidmochen@>
> wrote:
> > >
> > > Hi
> > >
> > > Just a small note... Atom's great design has been tweaked a bit by
> > this guy Olaf, who replaced the 50k cutoff pot with a 100k pot for a
> > broader response. I am using 100k on my Poly and the sweeping range
> is
> > very very sweet. You might want to try 50k and 100k for your
> aTomaHawk
> > board :)
> > >
> > > Of course Mike, you might as well want to add a switch for
> toggling
> > on/off MoogSlayer. Olaf did this also via a hardware switch...
> > >
> > > thanks galore
> > >
> > > Dave
> > >
> > > ps: glad that the aTomaHawk moniker caught on! :D
> > >
> > > ----- Original Message -----
> > > From: korgpolyex800
> > > To: korgpolyex@yahoogroups.com
> > > Sent: Monday, March 17, 2008 2:21 PM
> > > Subject: [korgpolyex] Moog Slayer mod - question
> > >
> > >
> > > Hi Atom,
> > >
> > > I am working on the new aTomaHawk board mod kit and have a
> question
> > > for you.
> > >
> > > Is the only reason you replaced VR2 with a pot so that you could
> > > control VCF cutoff via a knob instead of via the VCF cutoff
> parameter?
> > >
> > > Because it appears to me that providing cut off control via the
> > > existing circuitry will work just fine. The goal is to provide
> a knob
> > > to control control cut off.
> > >
> > > Then, you replaced VR5 so that you could really push the
> resonance
> > > into self oscillation. That will definitely need a digital
> > > potentiometer put in its place. However, I am wondering why you
> use a
> > > log pot. I would have thought that the resonance response on the
> > > filter chip would have been linear. And you ground one side
> which is
> > > completely different to the way the trimmer is set up. Why?
> > >
> > > Thanks for your help,
> > >
> > > Mike.
> > >
> >
>