Korg Poly800/EX800 Users

--- In korgpolyex@yahoogroups.com, Martin Ator <cyllall@...> wrote:
>
> Are you listening on headphones or the main out?
>
>
>
>
> ________________________________
> From: Quazimodo <noddyspuncture@...>
> To: korgpolyex@yahoogroups.com
> Sent: Sunday, 9 December 2012, 19:12
> Subject: [korgpolyex] Battery backup mod - and a fault appeared...
>
>
> Â
> Hi guys,
>
> I'm new to the group - hello, and hope you don't mind me diving straight in with a question..!?
>
> I have a Poly800 Mk1. I just performed the battery back up mod as outlined on a website I found. Just previous to this I had no sounds in the synth as it was not used for a while and after the mod I reloaded them all to check it out.
>
> But I noticed that on notes played in the lowest octave, (on patches that are programmed 'low') I am getting the top high octave notes breaking through - very quietly in the background. I suspect it is probably there on all patches, but most apparent on the bassier ones...!?
>
> Now, to perform the mod the instuctions told me to remove: C87, C88, D23 and D15 near to where the battery symbol is and where I put my holder.
>
> I am now wondering if this might be the cause as I have just looked in our files section here and there is a battery backup mod that describes a completely different method - removing R1 and D1...!
>
> I would need to take the synth apart and reverse the procedure to see, as it was definitely not doing this last time I used it - and before I performed this mod..!
>
> Could anyone please tell me if this might be a 'fault' that has appeared and is just coincidental?
>
> Many thanks for any help.
> Cheers,
> TOM
>

--- In korgpolyex@yahoogroups.com, Martin Ator <cyllall@...> wrote:
>
> Are you listening on headphones or the main out?
>
>
>
>
> ________________________________
> From: Quazimodo <noddyspuncture@...>
> To: korgpolyex@yahoogroups.com
> Sent: Sunday, 9 December 2012, 19:12
> Subject: [korgpolyex] Battery backup mod - and a fault appeared...
>
>
> Â
> Hi guys,
>
> I'm new to the group - hello, and hope you don't mind me diving straight in with a question..!?
>
> I have a Poly800 Mk1. I just performed the battery back up mod as outlined on a website I found. Just previous to this I had no sounds in the synth as it was not used for a while and after the mod I reloaded them all to check it out.
>
> But I noticed that on notes played in the lowest octave, (on patches that are programmed 'low') I am getting the top high octave notes breaking through - very quietly in the background. I suspect it is probably there on all patches, but most apparent on the bassier ones...!?
>
> Now, to perform the mod the instuctions told me to remove: C87, C88, D23 and D15 near to where the battery symbol is and where I put my holder.
>
> I am now wondering if this might be the cause as I have just looked in our files section here and there is a battery backup mod that describes a completely different method - removing R1 and D1...!
>
> I would need to take the synth apart and reverse the procedure to see, as it was definitely not doing this last time I used it - and before I performed this mod..!
>
> Could anyone please tell me if this might be a 'fault' that has appeared and is just coincidental?
>
> Many thanks for any help.
> Cheers,
> TOM
>

--- In korgpolyex@yahoogroups.com, "backshall1" <backshall1@...> wrote:
>
> The mod to remove C87, 88 and D15, 23 results in the memory being powered
> only by the CR2032, even when the synth is powered on, which can reduce the
> CR2032 battery life. It also reduces C-cell life (if you use them) by
> leaving a drain through R1 and D1. By removing R1, D1 and soldering the
> wires over there and leaving the other components in place, the memory is
> powered by the internal 5V supply when the synth is turned on and by the
> lithium cell when it is turned off.
>
> Is this one of the original Mk1 with no solder pads where the battery would
> eventually go, or the in-between one with solder pads but no battery?
>
> In any case, it doesn't seem like either mod should have any affect on the
> audio output.
>
>
>
> Don Backshall
>
>
>
> _____
>
> From: korgpolyex@yahoogroups.com [mailto:korgpolyex@yahoogroups.com] On
> Behalf Of Quazimodo
> Sent: Sunday, December 09, 2012 3:23 PM
> To: korgpolyex@yahoogroups.com
> Subject: [korgpolyex] Re: Battery backup mod - and a fault appeared...
>
>
>
>
>
> Just checked it on headphones actually. I will listen through an amplifier
> and see if it's the same.
>
> Cheers,
> TOM
>
> --- In korgpolyex@yahoogroups.com <mailto:korgpolyex%40yahoogroups.com> ,
> Martin Ator <cyllall@> wrote:
> >
> > Are you listening on headphones or the main out?
> >
> >
> >
> >
> > ________________________________
> > From: Quazimodo <noddyspuncture@>
> > To: korgpolyex@yahoogroups.com <mailto:korgpolyex%40yahoogroups.com>
> > Sent: Sunday, 9 December 2012, 19:12
> > Subject: [korgpolyex] Battery backup mod - and a fault appeared...
> >
> >
> > Â
> > Hi guys,
> >
> > I'm new to the group - hello, and hope you don't mind me diving straight
> in with a question..!?
> >
> > I have a Poly800 Mk1. I just performed the battery back up mod as outlined
> on a website I found. Just previous to this I had no sounds in the synth as
> it was not used for a while and after the mod I reloaded them all to check
> it out.
> >
> > But I noticed that on notes played in the lowest octave, (on patches that
> are programmed 'low') I am getting the top high octave notes breaking
> through - very quietly in the background. I suspect it is probably there on
> all patches, but most apparent on the bassier ones...!?
> >
> > Now, to perform the mod the instuctions told me to remove: C87, C88, D23
> and D15 near to where the battery symbol is and where I put my holder.
> >
> > I am now wondering if this might be the cause as I have just looked in our
> files section here and there is a battery backup mod that describes a
> completely different method - removing R1 and D1...!
> >
> > I would need to take the synth apart and reverse the procedure to see, as
> it was definitely not doing this last time I used it - and before I
> performed this mod..!
> >
> > Could anyone please tell me if this might be a 'fault' that has appeared
> and is just coincidental?
> >
> > Many thanks for any help.
> > Cheers,
> > TOM
> >
>

--- In korgpolyex@yahoogroups.com, Martin Ator <cyllall@...> wrote:
>
> Not sure what would cause this off the top of my head. Headphones are always a lot noisier than the main outs and let digital control noise through because it's a lower quality circuit.
> Is the sound all the way through or is it just on the tail of the sound like a kind of reverb, and have you tried it with chorus off/on?
>
>
>
> ________________________________
> From: Quazimodo <noddyspuncture@...>
> To: korgpolyex@yahoogroups.com
> Sent: Sunday, 9 December 2012, 20:53
> Subject: [korgpolyex] Re: Battery backup mod - and a fault appeared...
>
>
> Â
> Thanks for the tip Martin,
>
> Yes, it is much more apparent on headphones. But I'm still convinced it is there on the outputs... but very, very quiet - so not much to worry about at all.
>
> The thing is I have used the synth a lot on headphones before and never noticed it.
>
> Would there be any specific reason for the symptom..?
>
> Cheers,
> TOM
>
> --- In korgpolyex@yahoogroups.com, Martin Ator <cyllall@> wrote:
> >
> > Are you listening on headphones or the main out?
> >
> >
> >
> >
> > ________________________________
> > From: Quazimodo <noddyspuncture@>
> > To: korgpolyex@yahoogroups.com
> > Sent: Sunday, 9 December 2012, 19:12
> > Subject: [korgpolyex] Battery backup mod - and a fault appeared...
> >
> >
> > ÂÂ
> > Hi guys,
> >
> > I'm new to the group - hello, and hope you don't mind me diving straight in with a question..!?
> >
> > I have a Poly800 Mk1. I just performed the battery back up mod as outlined on a website I found. Just previous to this I had no sounds in the synth as it was not used for a while and after the mod I reloaded them all to check it out.
> >
> > But I noticed that on notes played in the lowest octave, (on patches that are programmed 'low') I am getting the top high octave notes breaking through - very quietly in the background. I suspect it is probably there on all patches, but most apparent on the bassier ones...!?
> >
> > Now, to perform the mod the instuctions told me to remove: C87, C88, D23 and D15 near to where the battery symbol is and where I put my holder.
> >
> > I am now wondering if this might be the cause as I have just looked in our files section here and there is a battery backup mod that describes a completely different method - removing R1 and D1...!
> >
> > I would need to take the synth apart and reverse the procedure to see, as it was definitely not doing this last time I used it - and before I performed this mod..!
> >
> > Could anyone please tell me if this might be a 'fault' that has appeared and is just coincidental?
> >
> > Many thanks for any help.
> > Cheers,
> > TOM
> >
>