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Discussion about the Korg PolySix synthesizer

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Message

Re: A freind's Polysix - VR2, VR1, D#4-E4 doesn't work properly

2006-01-11 by gil_we

Hey Johannes,

It take a very short second for the tuning to get to its final tune.

i.e. holding a key and powering up, the tune rises up one second and 
than stops.


--- In PolySix@yahoogroups.com, Johannes Hausensteiner <johau@g...> 
wrote:
>
> Hi,
> 
> How is the warm-up phase behaving? (You know, holding a key during
> power-on; the first 10-20secs you hear the tuning stabilize)
> 
> 
> 
> gil_we wrote:
> > anyone ?
> > 
> > --- In PolySix@yahoogroups.com, "gil_we" <gil_we@y...> wrote:
> > 
> >>I wonder if anyone would have any idea about the following 
problem...
> >>It's a friend's Polysix we both recovered from battery leakage a 
year
> >>ago, and left it untuned after we experienced some problem tuning 
it.
> >>Now we got back into it and we realized that on the tuning circuit
> >>KLM-366 new production):
> >>
> >>VR2 - just doesn't make any change to the tuning... (the resistor 
> >>itself is ok)
> >>VR1 - When adjusting it the pitch will drop or raise the first 
second
> >>but than will slowly get back to the initial pitch before changing
> >>its setting !
> >>The VR determing the D#4 to E4 gap seems to barely make any 
effect...
> >>All other VRs (Mid tune, VR3 low tuner, VR10/11 on all vco's) 
seems
> >>to work, but strangly VR15 makes change to the sound but not to 
pitch
> >>(I understand it is also a kind of mid-tuner).
> >>
> >>We replaced both 4051 in the tuning circuit and the two 072 and it
> >>didn't make any change... Well, actually, after replacing IC39 the
> >>low tuning started to work more or less ok (it is tuned more or 
less
> >>at the lower octaves but not at all at the higher octaves...)
> >>
> >>I wonder if anyone has any idea what could cause it ...
> >>
> >>Thanks all.
> >>
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6 
> > Yahoo! Groups Links
> > 
> > 
> > 
> >  
> > 
> > 
> >
>

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