I decided to make my "non-destructive" modification a bit more
permanent. I removed the clip lead and, in its place, I soldered in a
jumper wire. Now the synth is more robust and will better tolerate the
rigors of travel. If I wish to un-do the mod, it's still pretty easy to
reverse.
(I'm trying the new "Rich Text Format" interface for the Yahoo Groups
"Post Message" page. Let's see if it makes the link work
correctly...)
http://synthhacker.blogspot.com/2013/08/polysix-permanently\-removing-post.html
<
http://synthhacker.blogspot.com/2013/08/polysix-permanently-removing-po\st.html>
I hope that you're all having a good Summer!
Chip
--- In PolySix@yahoogroups.com, "chipaudette" wrote:
>
>
> Here's a full post showing how the mod can be done. I give schematics
and some pics and the basic audio demo that was linked earlier:
>
>
http://synthhacker.blogspot.com/2013/07/polysix-bypassing-post-effects-v\
cf.html
>
> At the end, I also analyze the background noise in each condition. I
found that defeating the post-effects VCF by forcing open the filter
actually ∗lowers∗ the noise from 100-1000Hz compared to the stock synth.
But, it also exposes more of the synth's noise above 2 kHz, as expected.
>
> By removing the VCF (by pulling U15 and jumpering to R168), though,
you get the lower noise value in the 100-1000Hz range ∗and∗ you get only
a very slight increased in noise above 2kHz. Win-Win!
>
> Chip
>
> --- In PolySix@yahoogroups.com, "chipaudette" chipaudette@ wrote:
> >
> >
> > Here's a sound demo of the mod that we've been discussing. It's a
very basic demo, but you'll definitely get the idea of how
defeating/removing this VCF really opens up the sound...
> >
> > https://soundcloud.com/synthhacker/korg-polysix-sound-of-removing
> >
> > Pretty dramaitc, eh? I call this one "The Snappy Mod". And,
because it can be done non-destructively, I highly recommend it!
> >
> > A full post with schematics, pics, and graphs will come later.
> >
> > Enjoy!
> >
> > Chip
> >
>
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