Korg Mono/Poly

Hello everyone.

Hi (put your name here), and welcome to this group.

Unfortunately, the Mono/Poly doesn't support expression pedals. There are indeed VCO and VCF frequency control jacks in the back to vary the pitch or filter cutoff. Both those connectors are waiting to receive a voltage from an outside source.

An expression pedal, such as the EP-2 From Moog Music and EV-5 from Roland, are just a potentiometer and some wires. Those pedals have a stereo 1/4" plug and are receiving a voltage from the synth, and send back the variations produced by the pot being moved by the foot plate.

On the MP4, there is no voltage present at the connectors on the back, except the "CV out" (variable voltage that follows the keyboard notes) and "TRIG out" (very short pulses on each key stroke).

What is required for an expression pedal to work is a fixed voltage source. There is the possibility of modifying the Mono/Poly to replace the switched mono "VCF fcM in" connector by a switched stereo one, and routing a fixed voltage source to that. But that would mean tinkering with your beloved synth.

So the short answer is: expression pedals will not work on a Korg Mono/Poly, sorry.

Alain.

--- In korg_mono-poly@yahoogroups.com, "suicidesushi82" <jeppe@...> wrote:
>
> Hello everyone.First post here...
> Okay so i really want to mod the filter cutoff with som kind of
> expression pedal. Does any of you have any experience with this? I
> bought a pedal from Moog called EP-2 because it was cheap and I figured
> it would fit with some CV standard that Mono/Poly used. But it didn't
> work. Are any of you useing an expression pedal to modulate the filter
> cutoff? And which?
> Thanks a bunch.
>

Korg used to make an expression pedal- if you can find one, you will LOVE IT !!!!! it ran on 2 nine volt batteries-
I used to have one- it offered an LFO mode( with sample and hold! )- hooked up to the MP it's a charm-
you could sweep the filter and/or lfo at the same time !
I sold mine on ebay 5 yrs ago for 350 usd- which I regret .

D

On Wed, Mar 17, 2010 at 10:34 AM, Alain <hubertalain@hotmail.com> wrote:

 

Hi (put your name here), and welcome to this group.

Unfortunately, the Mono/Poly doesn't support expression pedals. There are indeed VCO and VCF frequency control jacks in the back to vary the pitch or filter cutoff. Both those connectors are waiting to receive a voltage from an outside source.

An expression pedal, such as the EP-2 From Moog Music and EV-5 from Roland, are just a potentiometer and some wires. Those pedals have a stereo 1/4" plug and are receiving a voltage from the synth, and send back the variations produced by the pot being moved by the foot plate.

On the MP4, there is no voltage present at the connectors on the back, except the "CV out" (variable voltage that follows the keyboard notes) and "TRIG out" (very short pulses on each key stroke).

What is required for an expression pedal to work is a fixed voltage source. There is the possibility of modifying the Mono/Poly to replace the switched mono "VCF fcM in" connector by a switched stereo one, and routing a fixed voltage source to that. But that would mean tinkering with your beloved synth.

So the short answer is: expression pedals will not work on a Korg Mono/Poly, sorry.

Alain.

--- In korg_mono-poly@yahoogroups.com, "suicidesushi82" <jeppe@...> wrote:
>
> Hello everyone.First post here...
> Okay so i really want to mod the filter cutoff with som kind of
> expression pedal. Does any of you have any experience with this? I
> bought a pedal from Moog called EP-2 because it was cheap and I figured
> it would fit with some CV standard that Mono/Poly used. But it didn't
> work. Are any of you useing an expression pedal to modulate the filter
> cutoff? And which?
> Thanks a bunch.
>

--
eat and sleep....TODAY!!!!

Hi David. You're talking about the Korg MS-04 expression pedal that was offered back in the days of the MS-10 and MS-20 synths. Yes, that would be a great pedal to use with the MP4 ! Now, the only thing is to find one, and be prepared to spend a fair amount to get it.
I suppose we can always modify a Moog EV-5 or Roland EP-2 or Korg EXP-2 to add an LFO to them and power them with two 9V batteries ?

Alain.

--- In korg_mono-poly@yahoogroups.com, David Kyle <sammydvsjr@...> wrote:
>
> Korg used to make an expression pedal- if you can find one, you will LOVE IT
> !!!!! it ran on 2 nine volt batteries-
> I used to have one- it offered an LFO mode( with sample and hold! )- hooked
> up to the MP it's a charm-
> you could sweep the filter and/or lfo at the same time !
> I sold mine on ebay 5 yrs ago for 350 usd- which I regret .
>
> D
>
> On Wed, Mar 17, 2010 at 10:34 AM, Alain <hubertalain@...> wrote:
>
> >
> >
> > Hi (put your name here), and welcome to this group.
> >
> > Unfortunately, the Mono/Poly doesn't support expression pedals. There are
> > indeed VCO and VCF frequency control jacks in the back to vary the pitch or
> > filter cutoff. Both those connectors are waiting to receive a voltage from
> > an outside source.
> >
> > An expression pedal, such as the EP-2 From Moog Music and EV-5 from Roland,
> > are just a potentiometer and some wires. Those pedals have a stereo 1/4"
> > plug and are receiving a voltage from the synth, and send back the
> > variations produced by the pot being moved by the foot plate.
> >
> > On the MP4, there is no voltage present at the connectors on the back,
> > except the "CV out" (variable voltage that follows the keyboard notes) and
> > "TRIG out" (very short pulses on each key stroke).
> >
> > What is required for an expression pedal to work is a fixed voltage source.
> > There is the possibility of modifying the Mono/Poly to replace the switched
> > mono "VCF fcM in" connector by a switched stereo one, and routing a fixed
> > voltage source to that. But that would mean tinkering with your beloved
> > synth.
> >
> > So the short answer is: expression pedals will not work on a Korg
> > Mono/Poly, sorry.
> >
> > Alain.
> >
> > --- In korg_mono-poly@yahoogroups.com <korg_mono-poly%40yahoogroups.com>,
> > "suicidesushi82" <jeppe@> wrote:
> > >
> > > Hello everyone.First post here...
> > > Okay so i really want to mod the filter cutoff with som kind of
> > > expression pedal. Does any of you have any experience with this? I
> > > bought a pedal from Moog called EP-2 because it was cheap and I figured
> > > it would fit with some CV standard that Mono/Poly used. But it didn't
> > > work. Are any of you useing an expression pedal to modulate the filter
> > > cutoff? And which?
> > > Thanks a bunch.
> > >
> >
> >
> >
>
>
>
> --
> eat and sleep....TODAY!!!!
>

You could always try to find a vintage(rare) Korg MS-01 which would do exactly what you want.

Alain.

--- In korg_mono-poly@yahoogroups.com, "suicidesushi82" <jeppe@...> wrote:
>
> Hello everyone.First post here...
> Okay so i really want to mod the filter cutoff with som kind of
> expression pedal. Does any of you have any experience with this? I
> bought a pedal from Moog called EP-2 because it was cheap and I figured
> it would fit with some CV standard that Mono/Poly used. But it didn't
> work. Are any of you useing an expression pedal to modulate the filter
> cutoff? And which?
> Thanks a bunch.
>

Thanks for the answers guys. I recently saw that Moog has a expression pedal called Mp-201. I belive it can used as an LFO and it can send CV. Unfortunately its around 500 dollars.

Maybe someone has a schematic of the old Korg Pedal that was designed to work with the MP. Then modding an existing pedal could be an option...

--- In korg_mono-poly@yahoogroups.com, "Alain" <hubertalain@...> wrote:
>
> Hi David. You're talking about the Korg MS-04 expression pedal that was offered back in the days of the MS-10 and MS-20 synths. Yes, that would be a great pedal to use with the MP4 ! Now, the only thing is to find one, and be prepared to spend a fair amount to get it.
> I suppose we can always modify a Moog EV-5 or Roland EP-2 or Korg EXP-2 to add an LFO to them and power them with two 9V batteries ?
>
> Alain.
>
>
>
>
> --- In korg_mono-poly@yahoogroups.com, David Kyle <sammydvsjr@> wrote:
> >
> > Korg used to make an expression pedal- if you can find one, you will LOVE IT
> > !!!!! it ran on 2 nine volt batteries-
> > I used to have one- it offered an LFO mode( with sample and hold! )- hooked
> > up to the MP it's a charm-
> > you could sweep the filter and/or lfo at the same time !
> > I sold mine on ebay 5 yrs ago for 350 usd- which I regret .
> >
> > D
> >
> > On Wed, Mar 17, 2010 at 10:34 AM, Alain <hubertalain@> wrote:
> >
> > >
> > >
> > > Hi (put your name here), and welcome to this group.
> > >
> > > Unfortunately, the Mono/Poly doesn't support expression pedals. There are
> > > indeed VCO and VCF frequency control jacks in the back to vary the pitch or
> > > filter cutoff. Both those connectors are waiting to receive a voltage from
> > > an outside source.
> > >
> > > An expression pedal, such as the EP-2 From Moog Music and EV-5 from Roland,
> > > are just a potentiometer and some wires. Those pedals have a stereo 1/4"
> > > plug and are receiving a voltage from the synth, and send back the
> > > variations produced by the pot being moved by the foot plate.
> > >
> > > On the MP4, there is no voltage present at the connectors on the back,
> > > except the "CV out" (variable voltage that follows the keyboard notes) and
> > > "TRIG out" (very short pulses on each key stroke).
> > >
> > > What is required for an expression pedal to work is a fixed voltage source.
> > > There is the possibility of modifying the Mono/Poly to replace the switched
> > > mono "VCF fcM in" connector by a switched stereo one, and routing a fixed
> > > voltage source to that. But that would mean tinkering with your beloved
> > > synth.
> > >
> > > So the short answer is: expression pedals will not work on a Korg
> > > Mono/Poly, sorry.
> > >
> > > Alain.
> > >
> > > --- In korg_mono-poly@yahoogroups.com <korg_mono-poly%40yahoogroups.com>,
> > > "suicidesushi82" <jeppe@> wrote:
> > > >
> > > > Hello everyone.First post here...
> > > > Okay so i really want to mod the filter cutoff with som kind of
> > > > expression pedal. Does any of you have any experience with this? I
> > > > bought a pedal from Moog called EP-2 because it was cheap and I figured
> > > > it would fit with some CV standard that Mono/Poly used. But it didn't
> > > > work. Are any of you useing an expression pedal to modulate the filter
> > > > cutoff? And which?
> > > > Thanks a bunch.
> > > >
> > >
> > >
> > >
> >
> >
> >
> > --
> > eat and sleep....TODAY!!!!
> >
>

get an old wah pedal, strip the guts-
1 pot-lfo circuit- 2 3-way toggles- 2 outputs- put it out thru korg cv-

shouldnt that be fairly easy for someone with the skills to create?
that would be so sweet :)
 I want one for my 700s !!
D

On Wed, Mar 17, 2010 at 12:27 PM, Alain <hubertalain@hotmail.com> wrote:

 

Hi David. You're talking about the Korg MS-04 expression pedal that was offered back in the days of the MS-10 and MS-20 synths. Yes, that would be a great pedal to use with the MP4 ! Now, the only thing is to find one, and be prepared to spend a fair amount to get it.
I suppose we can always modify a Moog EV-5 or Roland EP-2 or Korg EXP-2 to add an LFO to them and power them with two 9V batteries ?

Alain.

--- In korg_mono-poly@yahoogroups.com, David Kyle <sammydvsjr@...> wrote:
>
> Korg used to make an expression pedal- if you can find one, you will LOVE IT
> !!!!! it ran on 2 nine volt batteries-
> I used to have one- it offered an LFO mode( with sample and hold! )- hooked
> up to the MP it's a charm-
> you could sweep the filter and/or lfo at the same time !
> I sold mine on ebay 5 yrs ago for 350 usd- which I regret .
>
> D
>
> On Wed, Mar 17, 2010 at 10:34 AM, Alain <hubertalain@...> wrote:
>
> >
> >
> > Hi (put your name here), and welcome to this group.
> >
> > Unfortunately, the Mono/Poly doesn't support expression pedals. There are
> > indeed VCO and VCF frequency control jacks in the back to vary the pitch or
> > filter cutoff. Both those connectors are waiting to receive a voltage from
> > an outside source.
> >
> > An expression pedal, such as the EP-2 From Moog Music and EV-5 from Roland,
> > are just a potentiometer and some wires. Those pedals have a stereo 1/4"
> > plug and are receiving a voltage from the synth, and send back the
> > variations produced by the pot being moved by the foot plate.
> >
> > On the MP4, there is no voltage present at the connectors on the back,
> > except the "CV out" (variable voltage that follows the keyboard notes) and
> > "TRIG out" (very short pulses on each key stroke).
> >
> > What is required for an expression pedal to work is a fixed voltage source.
> > There is the possibility of modifying the Mono/Poly to replace the switched
> > mono "VCF fcM in" connector by a switched stereo one, and routing a fixed
> > voltage source to that. But that would mean tinkering with your beloved
> > synth.
> >
> > So the short answer is: expression pedals will not work on a Korg
> > Mono/Poly, sorry.
> >
> > Alain.
> >
> > --- In korg_mono-poly@yahoogroups.com <korg_mono-poly%40yahoogroups.com>,
> > "suicidesushi82" <jeppe@> wrote:
> > >
> > > Hello everyone.First post here...
> > > Okay so i really want to mod the filter cutoff with som kind of
> > > expression pedal. Does any of you have any experience with this? I
> > > bought a pedal from Moog called EP-2 because it was cheap and I figured
> > > it would fit with some CV standard that Mono/Poly used. But it didn't
> > > work. Are any of you useing an expression pedal to modulate the filter
> > > cutoff? And which?
> > > Thanks a bunch.
> > >
> >
> >
> >
>
>
>
> --
> eat and sleep....TODAY!!!!
>

--
eat and sleep....TODAY!!!!