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Subject: Re: Hello poly-800 world

From: "serotonic_sound" <sero-tonic@...>
Date: 2009-02-11

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

This board had the 3v battery lug islands, but no battery was ever installed (and it had R1
and D2 installed )...

> 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...

Indeed it did, On my Jupiter-8, I mainly use the 12db/oct setting...it sounds "harder",
"nastier", "more rippin'", or what have you ... ;)

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

Interestingly no, the "Bend" slider, does nothing with the joystick unplugged...at least on
this unit...I didn't see any other weird mods when I was doing the battery mod.

> 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.

Thanks! I'll have a look at the circuit diagram, I assume its somewhere in the 'files" section
and it has the pin numbers for the joystick...

Thanks for your help...bed time in Canada...<yawn> l8r