Someone sent me a PM asking how exactly I was interfacing the Moog with the modular stuff. Here was my somewhat verbose reply:
I've got the Voyager connected to the VX-351 Voltage Expander Module, which is (in my opinion) a "must have" option for pretty much anyone who owns a Voyager. It's even more necessary if you've got a modular too!
The Voyager is probably the world's best modular controller. You get access to all of the important control voltages from the Moog (pitch CV, lfos, envelopes, wheels, aftertouch, x y and z pad control voltages, noise) plus a couple mults and attenuators. And then you can scroll through wavetables with your fingertip on the XY pad.
Itt will convert most of these things from MIDI to CV data, which means you don't need a dedicated MIDI/CV interface (if you don't want one).
This means that if you've got a Voyager and are thinking of getting into modulars, you're in luck because you've already got the functionality of a whole range of modules already with the Voyager. One semi-important feature the Voyager + VX combo lacks is that you don't get independent outputs for each oscillator. Which kinda sucks, but it's easily overlookable if you have, say, an AFG and an 01B laying around.
Another caveat about the combo, but it's no biggie - just something to be aware of. The Voyager typically operates with a lower CV voltage level (I think it's +/-2.5V) than modular stuff (which can be +/-10V) so you should attenuate any control voltage going INTO the Voyager just to be safe. (Check the manual for details on voltage compatibility).
The CVs coming OUT of the Voyager will play nicely with pretty much any Euro or MOTM format module I'm aware of. I've never found the need to amplify anything to compensate for the lower voltage.
So what was the patch? Here's the details:
VX pitch CV ----> VX Mult 1 (So I can send it to two oscillators)
VX Mult 1 ---> 1v/Oct on 01B and VCDO.
VX Mod wheel ---> VX Attenuator 1 (So I can control Mod wheel Depth)
VX-Attenuator 1 ---> VX Mult 2 (So I can send it to two destinations)
VX Mult 2 ---> "FM Index" on VCDO and "Expo CV In" on the Oakley filter.
VX Filter Env. ---> Oakley "Filter Env In" (Because every filter needs an envelope)
VX Afterpressure ---> Voyager Filter CV input.
VCDO & 01B ---> Oakley inputs 1 and 2
Oakley Superladder 1 Pole output ---> Mixer "in" on Voyager.
So the VX-351 is very much at the center of this patch. It (and the Voyager) are the patch's main "hub." Check it:
In short, get a VX-351 and find new levels of expression. For around $200 used, you gain access to so many CVs, it's like getting 10 modules! And while you're at it, you might as well throw on the CP-351 to hang out with the VX in your rack. It's a good buy for the money, and very useful if you're making bigger patches.
Sounds awesome and very nicely done explanation and presentation! 
