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Subject: Re: Filter chip?

From: "Chris Strellis" <synthasy2000@...>
Date: 2005-05-12

--- In korgpolyex@yahoogroups.com, x x <alienxxx2002@y...> wrote:
> it doesnt use a filter chip.Look at schematic on the files part ...

Wrong - to quote you "Look at schematic on the files part "

> jacobcullins <jacobcullins@y...> wrote:Looking to do some possible
renovations to my Poly-800 eventually..
> Does anyone know which filter chip the Poly-800/61/DW-X000/DSS-1
uses?

It's the Korg custom VCF/VCA called NJM2069AD. As used in DW6000,
DW8000, DSS-1.

I'm looking at SIX of them in my DW6000 as I type and I recently Moog
Slayed my Poly 800 and its a single one of these chips.

http://www.strellis.com/poly800.html

> If it's the same as the Polysix and Mono/Poly, which I had thought
it
> was, it would be the SSM2044 I believe? Anybody know for sure?

No it's not this one.

The Korg NJM2069AD chip has simultaneous 12dB/oct AND 24db/oct
outputs but Korg only use the 24dB/oct output!

It's an excellent sounding filter too.

Cheers

Chris