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<DIV dir=ltr align=left><SPAN class=477432917-23102020><FONT color=#0000ff
size=2 face=Arial>Here's a doc I found on the web that shows how to add one or
two resistors to a linear pot to achieve something close to the various tapers
shown:</FONT></SPAN></DIV>
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size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=477432917-23102020><FONT color=#0000ff
size=2 face=Arial><A
href="https://electro-music.com/forum/phpbb-files/pot_taper_amz_168.pdf">https://electro-music.com/forum/phpbb-files/pot_taper_amz_168.pdf</A></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=477432917-23102020></SPAN> </DIV><BR>
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<FONT size=2 face=Tahoma><B>From:</B> Synth-diy
[mailto:synth-diy-bounces@synth-diy.org] <B>On Behalf Of </B>Neil
Johnson<BR><B>Sent:</B> Friday, October 23, 2020 1:37 AM<BR><B>To:</B> John P
Shea<BR><B>Cc:</B> SYNTH DIY<BR><B>Subject:</B> Re: [sdiy] Star Instruments
Synare 3 pot tapers?<BR></FONT><BR></DIV>
<DIV></DIV><SPAN
style="BACKGROUND-COLOR: #ffecb3; COLOR: #000000; FONT-SIZE: 12px"><SPAN
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Non-UBC Email]</SPAN></SPAN></SPAN>
<DIV dir=ltr>
<DIV>Hi John,</DIV>
<DIV><BR></DIV>> <A
href="http://www.synfo.nl/servicemanuals/Star/SYNARE-S3_REPAIR_MANUAL.pdf">http://www.synfo.nl/servicemanuals/Star/SYNARE-S3_REPAIR_MANUAL.pdf</A><BR>><BR>>
there is mention of "C1M" pots in the oscillator section (CD4093 configured as
Schmitt Trigger inverter RC oscillator), and "D1M" pots in the EG
section.<BR>> The BOM at the end of the document vaguely mentions "two
different tapers".<BR>
<DIV>> Does anyone have any experience with this model? (a center position
pot reading would be real handy for the tune and decay pots)</DIV>
<DIV><BR></DIV>
<DIV>Those look like 1M pots with C and D tapers. You can google around
for the info, here's a handy chart:</DIV>
<DIV><BR></DIV>
<DIV><IMG alt=image.png src="cid:477432917@23102020-2520" width=250
height=270></DIV>
<DIV></DIV>
<DIV>(from <A
href="http://part.freelab.jp/image/VRcave.gif">http://part.freelab.jp/image/VRcave.gif</A>)</DIV>
<DIV><BR></DIV>
<DIV>C is reverse-log, typical for EQ circuits, while D is a more extreme audio
log taper.</DIV>
<DIV><BR></DIV>
<DIV>Cheers,</DIV>
<DIV>Neil<BR></DIV>
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