Hi,
Chorus in Poly800 has some reserves - theres no signal feedback.It
is possible to lead feedback from pin 7 thru potentiometer to pin 3
of MN3209. I have dismounted it momentally, so I am not sure, if I
had connected it directly from pins, or somewhere from input (Q4,Q5)
and output (Q7) circuit. I added picture to the Pictures section.
This feedback makes more fat chorus.
Next Chorus-mods are available on modulation signal - MN3102 makes
2 clocks signals for MN3209. And MN3102 is modulated with triangular
LFO on pin 7. I have to look at home on it today. And I have digi-
camera now, so I will add more pictures.
Jozef
--- In
korgpolyex@yahoogroups.com, "korgpolyex800"
<korgpolyex800@...> wrote:
>
> Sorry your post didn't make it through the ether. At least this one
> made it through.
>
> Nice mod you've done and tidy work too.
>
> Unison is a big goal. Especially when attempting to do portamento -
> which is really what I want to do.
>
> I'm not sure how the chorus is set up. I haven't looked at it very
> closely but if it is a bucket brigade chip then there are probably
> quite a few things that could be done. I have my hands full as it is
> right now so I won't be poking around in the chorus any time soon.
>
> Cheers,
>
> Mike.
>
> --- In korgpolyex@yahoogroups.com, "bys_jhn" <bys_jhn@> wrote:
> >
> > i had a nice post all typed out and it didnt get posted. bummer.
> >
> > anyway, im excited about all this talk of modding the poly
800... im
> > an ex 800 owner myself, and have done the moog slayer mod, the FM
mod,
> > and am working on an audio input mod where there is a knob that
fades
> > between the noise source/audio input, before all the rest of the
voice
> > architecture...
> >
> > mike, i have a couple requests for the new os:
> >
> > id love to have a unison mode with detune. this would be useful
for
> > hoover type sounds.
> >
> > are there any plans to expand on the sonic capabilities of the
chorus
> > unit? its a bucket brigade style chip if im not mistaken...
could it
> > be tweaked into something more useful?
> >
> > how about midi out while using the sequencer/arpeggiator? it
would be
> > cool if we could still use it to run another keyboard.
> >
> > finally heres some pics of my modded ex 800:
> >
> > http://i127.photobucket.com/albums/p144/alien_brain/DSCN0481.jpg
> >
> > http://i127.photobucket.com/albums/p144/alien_brain/DSCN0468.jpg
> >
> > http://i127.photobucket.com/albums/p144/alien_brain/DSCN0464.jpg
> >
> > cheers all!
> >
> > john
> >
>