Korg Poly800/EX800 Users

Christian,

I totally agree. It would be the easiest thing to use the original trimpots,
but ......
you have to remove all solder tin, upper and lower PCB side of all three
trimpot contacts at the same time.
I'm not able to do that, so for me it was much easier to destroy them -
you'll see if you can.

Fortunately I had a set of resistors at home, but I'm sure they would not
have been very expensive, if I hadn't them available ;-)

The other "externalizations":
First I thought it makes no sense.
Playing some time now with my Poly800 I think they are not senseless and
possible I'll add them.

- the white noise could be a good effect, I use it sometimes while playing a
sound (one very good feature is that you can edit all program data during
playing, but a knob would be better)
- tuning range with the front panel slider could be some wider, so this is
also useful (don't know the difference between tune and pitch adjust)

I miss another adjustment, I'll open another thread for this issue.

Olaf


----- Original Message -----
From: <creekree@...>
To: <korgpolyex@yahoogroups.com>
Sent: Wednesday, October 31, 2001 2:37 PM
Subject: [korgpolyex] Re: More mod informations


hi olaf,

thanks for those descriptions, they ought to make mods much easier :)
but one thing came to my mind looking at the sketch you drew:
wouldn\ufffdt it be easier to solder the original trimpots out and then use
*them* as resistors? would spare the hassle to measure them and buy
resistors of the same capacity.... just a thought....(so don\ufffdt "just
destroy them before you damage the PCB!" hehehe) anyway, i read
somewhere that there are even more trimpots which could be redirected
to external pots, here\ufffds a list:

VR1 - DCO Pitch adjust
VR2 - VCF Frequency adjust
VR3 - White Noise level adjust
VR4 - DCO Fine tune adjust
VR5 - VCF resonance adjust

does it make sense to , err.. whats the word.... "externalise" the
other three?

i\ufffdm eagerly waiting to get my poly800 delivered (thinking of all this
without even having one :) ), i\ufffdll let you know what i did to it when
it\ufffds here.... hehehe modding all over.....

christian


--- In korgpolyex@y..., "Olaf" <olgu@n...> wrote:
> Hi Christian,
>
> I added some comments for the pics in the modification album.
>
> And there's a small sketch of the wiring for the pots.
>
> It may look confusing, but it's simple, and it has the opportunity
to
> switch between factory and perform mode (this is when the knobs are
> working.)
>
> The hardware working (drilling, soldering) isn't too hard, but you
> have to be careful, of course. The pots are not going out very
> easily, just destroy them before you damage the PCB!
>
> Greetings,
>
> Olaf



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