[sdiy] Cem3350 : help with CV

[Plutonique9]

Hello,
I'm building my first DIY project from scratch, I've been commisioned 
by a friend to build him a mean filter box, so i thought it would be 
a smooth project to give this crazy electroniques a try :)

What I have nearly finished is a Dual VCF filter box with 2 LFO's, 
the box will be slightly modular taking advatage of all the aspects 
of the CEM3350, including VC resonance and cutoff for both filters, 
fixed gain and variable gain inputs (as Q increases), as well as 
switching each of the two onboard VCFS between Lowpass/Bandpass and 
Bandpass/highpass configerations.

The LFO's, BTW, were the dual arp style LFO's from Tom's cookbook, 
great simple little LFO's that were easy to build, simultaneous 
square and triangle outs per LFO.

The filter section was swiped from the CEM3350 datasheet, the big 
schematic on Page 1.

What I'm still sketchy about is what Voltage ranges the VC cutoff 
frequency and VC resonance is expecting (that is before they go 
through the resistors), i tried grasping this from the specs, but 
hazy I still am all the same.

I'm guessing that it would be 0-5v for the cutoff, but the resonance 
i have no idea about.

The CV source i'm expecting to use will come from the LFO's and 
manual controls for the Resonance and Cutoff.

Anyways, all i have to do is wire up all the switches and jacks and 
pots and she'll be done, the circuit board is 98 percent done.

All she needs now is a VC panner modulating a mono input between the 
two VCF inputs and she'll be a dream machine.

Thankyou for any help

Oh yeah, the datasheet for the 3350 can be found a the MOTM website;

http://www.synthtech.com/cem/c3350pdf.pdf
-- Plutonique9, Plutonique9 at symbiocom.com

I've been known to swallow a tree at a moment of evenin'