Discussion about the Korg PolySix synthesizer group photo

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Discussion about the Korg PolySix synthesizer

Index last updated: 2026-04-28 23:40 UTC

Message

Re: Suddenly out of tune -but still problems after changing PC-1 and R93

2008-09-04 by Andrew Jury

Peter,

If only the P6 had a sample and hold circuit! Good point about 
capacitors, especially electrolytic types, which could have well 
dried up after 25+ years service. But do test them first before 
binning them. I had what I though was a suspect capacitor in circuit 
(0.33uF). It still measured 0.339uF after all that time!

However, I listened to the sample and the croaky voices sounded just 
like mine before I replaced the VCF chips. I only has a single voice 
out. Try swaping the IC32 between voices (SSM2044) and see what 
happens. 

Did you get the 'private' message I sent you?

Cheers,
Andy

--- In PolySix@yahoogroups.com, "hjulskov" <hjulskov@...> wrote:
>
> I'm no expert either, but it sounds possible that the caps needs
> replacement -if no other suggestions comes up -that would be my 
first
> attempt to fix it.
> 
> Btw. I have uploaded a sample to the files section; First testing 
the
> six voices (you can hear distortion to voice 3 and 5) finally 
playing
> "just can't get enough" :-)
> 
> /Peter
> 
> 
> --- In PolySix@yahoogroups.com, steven pistrich <wasteking1@> wrote:
> >
> > Im no tech-pro, but i was having an unusual 'out-of-tune-voice'
> problem with my Chroma Polaris that 'experts' on the polaris users
> group said was caused by bad capacitors in the sample and hold
> circuits. i dont know if it has anything to do with your polysix
> problem, but it sounds slightly similar.  the polaris would not play
> through a scale without sounding like the intervals were wrong. and
> its self tuning procedure did nothing to fix it.
>

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