Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

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Subject: Re: [PolySix] VCF cutoff quirkiness

From: dizz@elitemofo.com
Date: 2004-09-14

Crow,

After cleaning the pot out with some contact cleaner the problem has improved
by appr. 50%. I believe it just hadn't been used in a while.
I finally got a decent DMM and measured the voltage on the pot. However, I
don't see any negative voltage unless I reverse the leads. It reads 0V at
minimum and sweeps up to 9.92V at the max rotation. In the trouble spot, the
meter reads "overload" briefly and quickly continues measuring correctly after
resuming the rotation. Any suggestions would be greatly appreciated!

dizz

Quoting The Old Crow <oldcrow@oldcrows.net>:

>
> Hi,
>
> You should check the output voltage on the wiper contact of the filter
> cutoff potentiometer. It should read +5V at maximum and -5V at minimum
> rotation. See what the reading is when the knob is set to a 'trouble'
> spot. That will help determine if the pot itself is dirty.
>
> Crow
> /∗∗/
>
>
>
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6
> Yahoo! Groups Links
>
>
>
>
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>