Seeking Roland MKS-80 and Jupiter 6 filter schematics

[Kirk]

Yes, still looking for them, I'd be grateful if you could email them too me.
I'm wondering
if I could add bandpass and highpass to my SH-101, which uses the IR3109,
and my JX-10
which uses the IR3R05. Another possibility I'm thinking of with the SH-101
is to build a
second filter for the SH-101 that would have lowpass/bandbass/highpass. If I
used the
IR3109, as bad an idea as this is due to the limited supply of the chip, it
would possibly
have the advantage of being easy to interface with the existing SH-101
filter, creating an 8
pole lowpass for one thing.

Thanks for the offer, I look forward to getting the schematics.

Kirk


----- Original Message -----
From: <WeAreAs1 at aol.com>
To: <kirke at bellsouth.net>; <synth-diy at node12b53.a2000.nl>
Sent: Sunday, December 10, 2000 4:08 PM
Subject: Re: Seeking Roland MKS-80 and Jupiter 6 filter schematics


>
> In a message dated 12/8/00 3:11:57 PM, kirke at bellsouth.net writes:
>
> << Does anyone have the MKS-80 and Jupiter 6 schematics and could easily
scan
>
> the filter circuitry?
>
> I'm interested to see how the IR3109 and IR3R05 are configured in those
> models, actually the early MKS-80 had the IR3109 so a newer MKS-80
> and either an older MKS-80 or a Jupiter 6 filter is what I'm looking for.
>>
>
> Hello Kirke,
>
> Do you still need these documents?  I have made high-quality scans of the
> IR3109 filter sections of both synths (JP6 and older version of MKS-80).
> Please let me know if you still need them, and I will email them to you.
Are
> you going to build a clone of them?  If so, are you going to use the
IR3109
> chip?  I have always liked the JP6 filter.  The Lowpass isn't very
> impressive, but the Highpass and Bandpass modes are very, very nice.
>
> Best regards,
> Michael Bacich
>