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<DIV dir=ltr align=left><SPAN class=343342501-10022024>Actually, you just have
to know how to do it.</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=343342501-10022024></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=343342501-10022024>Incidentally, I believe
that I am the only living person who knows how to do it.</SPAN></DIV><BR>
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<FONT size=2 face=Tahoma><B>From:</B> Stephen Makdisi
[mailto:shmakdisi@xvetrd.us] <BR><B>Sent:</B> Friday, February 09, 2024 2:01
PM<BR><B>To:</B> David G Dixon<BR><B>Cc:</B> Mike Bryant; Adam (synthDIY);
synth-diy<BR><B>Subject:</B> Re: [sdiy] Unique sounding modules that can't have
voltage control?<BR></FONT><BR></DIV>
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<DIV dir=ltr>I got a feeling a Baxandall is going to be a real pain to get under
control with a 2164, but probably easier than tuning a Twin T or a Wein bridge
network.</DIV>
<DIV dir=ltr><BR></DIV>
<DIV dir=ltr>I think pretty much any circuit that requires both sides of the
potentiometer, or even worse, both sides of a dual gang pot, is going to be
difficult.</DIV>
<DIV dir=ltr><BR></DIV>
<DIV dir=ltr>But not impossible. Not something I plan on trying, but not
impossible. </DIV>
<DIV dir=ltr><BR></DIV>
<DIV dir=ltr>-Stephen</DIV>
<DIV dir=ltr><BR>
<BLOCKQUOTE type="cite">On Feb 9, 2024, at 14:20, David G Dixon via Synth-diy
<synth-diy@synth-diy.org> wrote:<BR><BR></BLOCKQUOTE></DIV>
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<DIV dir=ltr align=left><SPAN class=728591519-09022024>Not sure about
Baxandall, but recently I figured out how to put the Korg morphing LFO circuit
under voltage control using 2164. I figure that if that is possible,
then the Baxandall circuit should be a piece of cake. The big problem
with 2164 is that it has to terminate at a virtual ground, so that means that
some inverting opamps always have to be shoehorned in there, even if they are
not really needed or wanted.</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=728591519-09022024></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=728591519-09022024>I'll work up the
Baxandall circuit this weekend and report back with my findings, and maybe a
demo, next week.</SPAN></DIV><BR>
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<FONT size=2 face=Tahoma><B>From:</B> Mike Bryant
[mailto:mbryant@futurehorizons.com] <BR><B>Sent:</B> Friday, February 09, 2024
2:18 AM<BR><B>To:</B> Adam (synthDIY); David G Dixon<BR><B>Cc:</B>
synth-diy<BR><B>Subject:</B> Re: [sdiy] Unique sounding modules that can't
have voltage control?<BR></FONT><BR></DIV>
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class=elementToProof><SPAN style="FONT-SIZE: 11pt"><BR>> On 9 Feb 2024, at
2:27 pm, David G Dixon via Synth-diy <synth-diy@synth-diy.org>
wrote:<BR>><BR>> I doubt that there are many things that couldn't be put
under voltage<BR>> control with a 2164 and a bit of
ingenuity.<BR></SPAN></DIV>
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class=elementToProof><SPAN style="FONT-SIZE: 11pt">Baxandall tone control
? I imagine it would make the op-amp unstable without a lot
of extra
caps.<BR></SPAN></DIV><SPAN>________________________________________________________</SPAN><BR><SPAN>This
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