Discussion about the Korg PolySix synthesizer group photo

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Discussion about the Korg PolySix synthesizer

Index last updated: 2026-04-14 00:08 UTC

Message

Re: Trident mkI filter problem

2007-10-05 by gil_we

Does it happen only to one of the 8 oscillators ? if so, replace its 
SSM2044 chip....



--- In PolySix@yahoogroups.com, "roisto" <roisto@...> wrote:
>
> I mean that filter of the last two oscillators has somehow turned 
to 
> work negative. When cutoff filter is opened, one oscillator plays 
it 
> closed (like lowpass effect), and vice versa, when filter is 
closed, 
> one oscillator plays filter totally opened. Two modes at the Eg-
mode 
> seems to change this effect between 7th and 8th osc. Thank you for 
> you reply.
> 
> -t
> 
> 
> 
> --- In PolySix@yahoogroups.com, "gil_we" <gil_we@> wrote:
> >
> > What do you mean by "opposite way" ??
> > 
> > The replacements seems fine to me.
> > 
> > 
> > 
> > 
> > 
> > 
> > --- In PolySix@yahoogroups.com, "roisto" <roisto@> wrote:
> > >
> > > I just got this synth and it has something wrong with 7th and 
8th
> > > voices. When i´m adjusting eg intensity, filters for the last 
two 
> > > voices are working opposite way :) i opened it and found that 
all 
> the 
> > > vcf:s were SSMT2044 except voice 8 wich was SSM2044 (maybe 
> someone 
> > > has changed one or all of them?!) and MC14066B chip at the 8th 
> voice 
> > > has been replaced with F 4066BPC (having "indiana" text on 
it).. 
> > > anyways battery was brand new inside the trident, and 
everything 
> else 
> > > seems to work 100%. Any ideas how to fix this?
> > >
> >
>

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