MOTM

> Both CS-15 & CS-15D are mono-PHONIC, but they're both bi-TIMBRAL ...

Thanks Doug.  I got confused by someone's comment about the CS-15 being
possibly duo-phonic.  I can see how the knob 1/2 and preset 1/2 would lead
one to "think" of it that way.

> ... or do the two mixers on the CS-15 (not present on
> the CS-15D IIRC) allow you to pan each VCO between
> each of the two VCF->VCA paths, as opposed to the 
> forced segregation of the two VCO's on the CS-15D?

I see.  I think the mixers are a huge feature on the CS-15.  You can be
bi-timbral as you say in actually TWO different configurations.
One: would be one VCO, one VCF, one VCA, one EG per timber.  Or...
Two: both VCOs on one timbre and noise or external VCOs on the other timbre

> Those Yamaha CS- synths DO have very nice modulation
> routing capabilities (love 'em on my CS-40M!)

Yep.   For a simple mono-synth, it is a sweet puppy.

> >Unfortunately, the CS-15 is plagued by the damn V/Hz VCO control
> >standard.  
> 
> Works great with Korg MS- synths!

Yes, I have a MS-20, but I am about ready to part with it.  LAst two on
E-bay have sold for $1200-1400 range.  I don't like it THAT much.
 
> I'd like to.  Sorry I don't have any available pics of the CS-15D.

http://165.138.219.2/~drew/ahmw99.html

Larry Hendry