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Discussion about the Korg PolySix synthesizer

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Polysix modifications

2013-11-21 by Terje Winther

Hi Chips,
Thanks for the reply.

Re: R166 (the 1K resistor not being present), I just looked in my synth...mine is also missing. Interesting.

Yes, indeed so. I read some comments elsewhere that the Polysix schematics iss full of errors. This could be one of them.

e: R167 (the 33K resistor maybe not being 33K), mine is colored orange-orange-orange, which is 33K, as specified.

Yes, that is right. Mine is 4.7K though, and that could be because Korg discovered that it was "too much" treble boost.

f you've been checking out my frequency-response mods, don't miss the others that I did after this one:

I have them! Thanks for sharing them.
I am going to implement them all, but with front panel switches, so that I can switch between the original and the modified versions. The bass and the treble mods are on/off functions, but the "bypass the post-effect VCF" mod needed some elaborate triple-switch thinking.





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