[sdiy] Modifying CV

[Karl Ekdahl]

> I'd have read that as... "it doesn't follow
> either standard and in fact
> won't track a damn thing accurately..." 
> <lol>

>From the looks of it, whoever designed this doesn't seem to have any linearization-circuitry on the thyraton. Depending on the circuit configuration you might be able to get 1 - 1 1/2 octave of 1V/Oct tracking but no better then that. I wish there was a public schematic, would be easier to tell...

Karl

> 
> H^) harry
> 
> 
> 
> On Thu, 20 Nov 2008 15:26:33 -0500, David Anderson wrote
> > The Yamaha CS15 is V/Hz (Paia, some Korg). According
> to the 
> > Phantastron web page, its "CV is not normalized
> to V/oct or V/Hz,
> >  rather it is "in-between" and can work with
> both types of input if 
> > the pitch adjust and other settings are tweaked."
> > 
> > In other words: fiddle with the knobs and switches to
> get as close 
> > as you can.
> > 
> > Gregtronic wrote:
> > > So I recently purchased and assembled a
> Phantastron from 
> > > Electricwestern.com which is probably the coolest
> thing i've ever gotten 
> > > for 200 bucks.  Unfortunately though, the CV
> input is quite strange and 
> > > doesn't track as well as I'd hope.  I
> have a yamaha cs-15 which i'm 
> > > trying to use as the CV out, and then i can use
> the audio input of the 
> > > CS-15 and use it's filters and VCA to rock
> out on my Phantastron.  Right 
> > > now it's tracking as if one octave on the
> cs-15 is one 5th on the 
> > > phantastron.  Is there any way i can modify the
> cv output, possibly by 
> > > means of a little module in between the cs-15 and
> phantastron, that 
> > > let's me scale the pitch the way i want it? 
> Any help would be awesome!
> > > 
> > > 
> > _______________________________________________
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> > Synth-diy at dropmix.xs4all.nl
> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
> 
> 
> Harry Bissell & Nora Abdullah 4eva
> 
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