Korg Poly800/EX800 Users

HI there, new guy here - I saw something about the FM-800 mod where
the DCO-1 modulates the VCF and I am amazed how simple it is to
accomplish. Now I would like to do the same thing with the VCA for
amplitude modulation and DCO1>DCO2 FM w/adjustable feedback and maybe
even cross FM. Now here's the hitch: I have only accomplished the
first mentioned mod by following the instructions on this site:
http://www.synthmod.net/korg/fm800/ and though I know something about
electronics and soldering I just really, REALLY suck at reading
schematics, so if someone could point out for me where VCA, DCO1 and
DCO2 are and the right spots to get said mods accomplished that would
be awesome.

Greetings - Patrick

On Sat, 6 Sep 2008, P........ wrote:

> HI there, new guy here - I saw something about the FM-800 mod where the
> DCO-1 modulates the VCF and I am amazed how simple it is to accomplish.
> Now I would like to do the same thing with the VCA for amplitude
> modulation and DCO1>DCO2 FM w/adjustable feedback and maybe even cross
> FM. Now here's the hitch: I have only accomplished the first mentioned
> mod by following the instructions on this site:
> http://www.synthmod.net/korg/fm800/ and though I know something about
> electronics and soldering I just really, REALLY suck at reading
> schematics, so if someone could point out for me where VCA, DCO1 and
> DCO2 are and the right spots to get said mods accomplished that would be
> awesome.

================

glad you like ;)

DCO->AM might work... i'll have to look into that.

DCO->FM(DCO) won't work. the DCOs are digital, so you can't just run a
wire between DCOs and get modulation. if you're new to this list, you may
not have heard about the new OS for the 800, and you might ask about doing
DCO cross modulation in software, but i'm pretty sure the CPU and/or
hardware won't work that way.


--
...atom

________________________
http://atom.smasher.org/
762A 3B98 A3C3 96C9 C6B7 582A B88D 52E4 D9F5 7808
-------------------------------------------------

"War is capitalism with the gloves off."
-- Tom Stoppard

Hi,
hopefully, I will soon post my "semi-modular" like modifications,
where several modulations will be possible.
Until now from my Poly800 I´ve heard DCO->Chorus, Chorus LFO->VCF
Resonance, ChorusLFO speed changing is easy as well.
But poor old Poly800, with wires sticking out around. I had to
assembly it back together...
Now I uploaded block-diagram for Poly800 with possible inputs/outputs
at least - in the Files > Technical section
http://f1.grp.yahoofs.com/v1/wBPFSGq0g4xwVsPrD-
tiY5k2Xonbsh3nTwrbSw63eKe9kquZ4fErzWXb1oBZAbSAuql8UjCDeoRAAj3oY5qZYPW6
fEslAeJMHz4/Technical/Poly800%20-%20Matrix.jpg . Sorry for quality -
it is scan of my hand-drawed night mares...)

Jozef

--- In korgpolyex@yahoogroups.com, Atom Smasher <atom@...> wrote:
>
> On Sat, 6 Sep 2008, P........ wrote:
>
> > HI there, new guy here - I saw something about the FM-800 mod
where the
> > DCO-1 modulates the VCF and I am amazed how simple it is to
accomplish.
> > Now I would like to do the same thing with the VCA for amplitude
> > modulation and DCO1>DCO2 FM w/adjustable feedback and maybe even
cross
> > FM. Now here's the hitch: I have only accomplished the first
mentioned
> > mod by following the instructions on this site:
> > http://www.synthmod.net/korg/fm800/ and though I know something
about
> > electronics and soldering I just really, REALLY suck at reading
> > schematics, so if someone could point out for me where VCA, DCO1
and
> > DCO2 are and the right spots to get said mods accomplished that
would be
> > awesome.
> ================
>
> glad you like ;)
>
> DCO->AM might work... i'll have to look into that.
>
> DCO->FM(DCO) won't work. the DCOs are digital, so you can't just
run a
> wire between DCOs and get modulation. if you're new to this list,
you may
> not have heard about the new OS for the 800, and you might ask
about doing
> DCO cross modulation in software, but i'm pretty sure the CPU
and/or
> hardware won't work that way.
>
>
> --
> ...atom
>
> ________________________
> http://atom.smasher.org/
> 762A 3B98 A3C3 96C9 C6B7 582A B88D 52E4 D9F5 7808
> -------------------------------------------------
>
> "War is capitalism with the gloves off."
> -- Tom Stoppard
>

Hi Josef,

Did you ever try the Cross Modulation mod? If so, from where did you
take the signals for the datainput to the xor-gate? I have tried
hooking my xorgate to pin 14 and 15 on ic6, but i dont get any usable
output..

--- In korgpolyex@yahoogroups.com, "jusufzemplin" <jusuf@...> wrote:
>
> Hi,
> hopefully, I will soon post my "semi-modular" like modifications,
> where several modulations will be possible.
> Until now from my Poly800 I´ve heard DCO->Chorus, Chorus LFO->VCF
> Resonance, ChorusLFO speed changing is easy as well.
> But poor old Poly800, with wires sticking out around. I had to
> assembly it back together...
> Now I uploaded block-diagram for Poly800 with possible inputs/outputs
> at least - in the Files > Technical section
> http://f1.grp.yahoofs.com/v1/wBPFSGq0g4xwVsPrD-
> tiY5k2Xonbsh3nTwrbSw63eKe9kquZ4fErzWXb1oBZAbSAuql8UjCDeoRAAj3oY5qZYPW6
> fEslAeJMHz4/Technical/Poly800%20-%20Matrix.jpg . Sorry for quality -
> it is scan of my hand-drawed night mares...)
>
> Jozef
>
>
> --- In korgpolyex@yahoogroups.com, Atom Smasher <atom@> wrote:
> >
> > On Sat, 6 Sep 2008, P........ wrote:
> >
> > > HI there, new guy here - I saw something about the FM-800 mod
> where the
> > > DCO-1 modulates the VCF and I am amazed how simple it is to
> accomplish.
> > > Now I would like to do the same thing with the VCA for amplitude
> > > modulation and DCO1>DCO2 FM w/adjustable feedback and maybe even
> cross
> > > FM. Now here's the hitch: I have only accomplished the first
> mentioned
> > > mod by following the instructions on this site:
> > > http://www.synthmod.net/korg/fm800/ and though I know something
> about
> > > electronics and soldering I just really, REALLY suck at reading
> > > schematics, so if someone could point out for me where VCA, DCO1
> and
> > > DCO2 are and the right spots to get said mods accomplished that
> would be
> > > awesome.
> > ================
> >
> > glad you like ;)
> >
> > DCO->AM might work... i'll have to look into that.
> >
> > DCO->FM(DCO) won't work. the DCOs are digital, so you can't just
> run a
> > wire between DCOs and get modulation. if you're new to this list,
> you may
> > not have heard about the new OS for the 800, and you might ask
> about doing
> > DCO cross modulation in software, but i'm pretty sure the CPU
> and/or
> > hardware won't work that way.
> >
> >
> > --
> > ...atom
> >
> > ________________________
> > http://atom.smasher.org/
> > 762A 3B98 A3C3 96C9 C6B7 582A B88D 52E4 D9F5 7808
> > -------------------------------------------------
> >
> > "War is capitalism with the gloves off."
> > -- Tom Stoppard
> >
>