Yamaha CS80

I know he cloned the filter chip and the GX-1 filter module.  The 
designs are built by Paul Schrieber as part of his modular line:
http://www.synthtech.com/motm480.html
http://www.synthtech.com/motm485.html

I haven't heard from Scott in a long time either.  Sometimes people get 
busy with real life :)

  David

> J. Douglas Rodriguez <mailto:floobygoop@...>
> November 13, 2011 2:44 PM
> Are you serious? SMD boards to replace the chips? That would be 
> awesome! I'd love to get my hands on the details.
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> b3groover <mailto:b3groover@...>
> November 13, 2011 2:38 PM
> Well, Scott Rider was working on it according to this post two years ago:
>
> http://launch.groups.yahoo.com/group/yamahacs80/message/2481
>
> I really hope he's okay. He hasn't posted here in years.
>
> ----Jim
>
> On Sun, Nov 13, 2011 at 3:47 PM, J. Douglas Rodriguez
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> J. Douglas Rodriguez <mailto:floobygoop@...>
> November 13, 2011 12:47 PM
> If someone actually cloned these chips, we'd all sleep easier at 
> night, right?
>
> Doug
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> organissimo <mailto:b3groover@...>
> November 13, 2011 12:19 PM
> Hello folks!
>
> I'm new to the group. I just purchased a Yamaha CS50 that only has one 
> voice card fully functioning. Thankfully I got the synth very cheap. 
> I've traced the issues down to two EGs and a couple VCAs. But as 
> everyone knows, those proprietary Yamaha chips are becoming more and 
> more scarce. This is a problem that will only be exacerbated as time 
> marches on.
>
> I've found some old posts on this group from Scott Rider (Old Crow) 
> concerning re-creating some of these chips. I've emailed Scott but 
> have yet to hear back. It seems he hasn't posted in a few years as 
> well. I hope he is ok.
>
> Has anyone else looked into re-creating these chips? I'm not an 
> electronics engineer by any stretch of the imagination. But it seems 
> like it would be possible, using modern components like the THAT 2181 
> VCA, to create a viable substitute for chips like the IG00151 VCA.
>
> Thoughts?
> ----Jim
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