Archive of the former Yahoo!Groups mailing list: Korg Poly800/EX800 Users

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [korgpolyex] FM-800 mod

From: Atom Smasher <atom@...>
Date: 2006-04-11

On Tue, 11 Apr 2006, Tim Bieniosek wrote:

> Wow, what nasty sounds! Thank you atom smasher!
=============

you're welcome.


> With the filter in self-oscillation you get real "FM" sounds. Without
> being able to precisely scale the filter keyboard tracking it's not
> really playable, but it is great for sfx.
>
> With resonance down there is the potential for more musical, playable
> tones I would describe as grungy, especially with filter cutoff down as
> well. With cutoff halfway up I could get some tones reminiscent of a
> cello or a human voice.
>
> I recorded sounds and took pictures last night, I'll try to get them up
> tonight.
>
> One thing I noticed is that the effects seemed to come and go on every
> 3rd or 4th key? I'm not sure if this is just a product of the
> frequencies involved?
==================

that's odd.... does it seem to do that on different patches with different
filter settings?


> Trying to understand the schematics on the web is a pain, so I'm
> wondering what's the difference between r74-pin 7 of IC4 that we're
> using and r76-pin 7 of IC5 that we're not?
===================

from memory... IC5 operates on DCO2, which isn't always available. IC4
operates on DCO1 which is always available.

note that you can use this mod even if DCO1 level is 0.


--
...atom

________________________
http://atom.smasher.org/
762A 3B98 A3C3 96C9 C6B7 582A B88D 52E4 D9F5 7808
-------------------------------------------------

"Pick battles important enough to fight
and small enough to win."
-- Johnathan Kozol