Korg Poly800/EX800 Users

On Wed, 2009-02-11 at 08:47 +0000, serotonic_sound wrote:

> Oh dear, then I read about the battery issue in the manual....WHAT? NO INTERNAL 
> BATTERY? You must be kidding me, seriously? come on...so I unplugged the dc power, 
> plugged it back in, sure enough, everything was erased...no really, come on, really? 
> seriously? come on korg...really?  YES REALLY. 

I've never seen one without an internal battery.  Maybe it's a UK thing,
every one through Korg UK had a battery fitted?

> Anyway, this synth, for certain applications, absolutely kills!  I love it to death...the factory 
> presets are ridiculously bad...seriously all of them (even patch 15 ;) This thing sounds 
> best when you open it right up loud and pure...I REALLY, REALLY, love the oscillators on 
> this thing...and the filter sounds really good, but I'm going to do the 12db mod asap, I 
> don't like 24db filters personally for the music I make...I prefer the more acidy sound of 
> 12db...

Well the classic TB303 is an 18dB/octave filter, on account of how they
couldn't squeeze the fourth capacitor and transistor pair into the
board...

> I'm missing the joystick unit completely, its not just broken, its gone, the whole unit...  I 
> can stare down the square hole and see the connectors hanging there.
> 
> 1) I think the pitch of the unit is being thrown off because there's no resistance on the 
> pitch mod joystick, it's sounds about 5 tones off, yeah?

Quite possible.  Does the pitch change if you move the bend depth
slider?

> 2) Would somebody be kind enough to tell me what resistors I should wire up to what 
> leads to simulate the joystick being in the center? Please?  I'll buy you a case of beer or 
> lunch, or write you a song, or something...I promise.

The pot is just used as a potential divider, so any two identical
resistors should be about right.  Looking at the circuit diagram it's a
10k pot on both axes of the stick, so a couple of 4.7k resistors should
do the job for you.

HTH
  Gordon