[sdiy] Star Instruments Synare 3 pot tapers?

[David G Dixon]

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:
 
https://electro-music.com/forum/phpbb-files/pot_taper_amz_168.pdf
 

  _____  

From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of Neil
Johnson
Sent: Friday, October 23, 2020 1:37 AM
To: John P Shea
Cc: SYNTH DIY
Subject: Re: [sdiy] Star Instruments Synare 3 pot tapers?


[CAUTION: Non-UBC Email] 
Hi John,

> http://www.synfo.nl/servicemanuals/Star/SYNARE-S3_REPAIR_MANUAL.pdf
>
> 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.
> The BOM at the end of the document vaguely mentions "two different
tapers".

> Does anyone have any experience with this model? (a center position pot
reading would be real handy for the tune and decay pots)

Those look like 1M pots with C and D tapers.  You can google around for the
info, here's a handy chart:

image.png
(from http://part.freelab.jp/image/VRcave.gif)

C is reverse-log, typical for EQ circuits, while D is a more extreme audio
log taper.

Cheers,
Neil


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