vco_designs.html

Date: Tue, 08 Mar 2005 17:21:08 -0800
From: James Patchell
To: “[iso-8859-1] Fr d ric Bourgeais” ,
sdiy DIY
Subject: Re: [sdiy] Top DIY VCO

Well, if this is now open to all VCO’s…

Expensive:
http://www.oldcrows.net/~patchell/synthmodulesII/200-1007.pdf

Cheap: http://www.oldcrows.net/~patchell/synthmodules/100-1007.pdf

Date: Tue, 8 Mar 2005 20:32:52 -0600 (GMT-06:00)
From: Scott Stites
To: “[ISO-8859-1] Ren Schmitz” ,
“[ISO-8859-1] Fr d ric Bourgeais”
Cc: sdiy DIY
Subject: Re: [sdiy] Top DIY VCO

>I’d recommend VCO3 off my site. I get very positive comments about the
>sound of it. Besides of that it has a very large sweep range, makeing it
>possible to go from sub-lfo (15minutes cycles) to ultrasonic without any
>cap switching or the like.
>Components should be easy to source in Europe, maybe the only thing that
>got difficult to get is the 2SC1583, which can be substituted by a 2SC3381.

I’ll vouch for VCO3 – the frequency range of that thing is incredible.
Ultrasonic to the “is-this-thing-oscillating?-oh-yeah-I-guess-it-is” LFO
effect. I’ve coined a new unit when measuring the low end freq of VCO3 –
the CB (Coffee
Break). Low end of my VCO3’s is around 1.32 CB’s, according the the CB
setting of my frequency counter.

Another cool thing is that the hard sync synchronizes to my keyboard
trigger, which is pretty nice for LFO use. Of course, at audio frequencies,
the sync sounds great, too…..

A great sounding, useful as heck VCO.