[sdiy] Yamaha CS-15D schematic

[Bob Weigel]

I just got off the phone w/Yamaha as yet someone else wanted this 
diagram and I had something else to talk about so here's what I wrote 
the guy.
------------------

I'm calling them right now to see what their latest word is on the 
matter.  Obviously there's no infringing market.  Even if people could 
get the manuals they'll not be building synths like this again and 
nobody can get more than a few of the parts so...what is the point of 
keeping the manual from people?  I have no idea.  Obviously these 
products don't remotely infringe on the market for any of their current 
products.  They are just the property of collectors and people like me 
who want those esoteric sounds in their productions.

Anyway... hcasey at yamaha.com tells me that I can't distribute anything as 
I thought but HE (for people in continental US) will often send out 
these older schematics if someone will sign an agreement.  For outside 
US he said Go to the yamaha international site

http://www.global.yamaha.com/products/index.html

and 'countries & regions' upper left there.  Select your area and use 
that to find the contact people I guess and ask them because Yamaha 
allows each region to set it's own policies on such things. -Bob

Richard Atkinson wrote:

> Has anyone seen the schematic diagram for this rather unusual preset /
> variable monosynth? In one sense it's a more capable synthesizer than any
> of the CS-5, 10, 15 bunch, even the CS-30, since it has two VCOs, two 
> VCFs,
> 2 VCAs and 4 envelope generators. However, half of that is stuck behind
> preset sounds only, and the modulation capabilities are inferior to 
> all the
> previous synthesizers.
>
> A prime candidate for modification and modularising, you might say!
>
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