Here’s a Youtube clip of me playing the mf-107,104, and 102 with a ribbon controller I made. Despite the fact that the ribbon controller is passive powered it is still able to trigger the envelope on the 104.
http://youtube.com/watch?v=d8RiEQjOdUc
I also put up a clip of me playing the Voyager with a ribbon controller in the Voyager forum.
Pretty neat, what did you use for the resistive strip?
You can use Ampex 489 SVHS video tape.
nice! 
Thats really cool! Are the ribbon controllers easy to make?? Ive been wanting one to plug into my micromoog, but it would probably be easier/cheaper to build one.
I wish that you would have posted this earlier, I may have bid on the item! Can you tell me what case are you using to rack your foogers? Are you using the MF Rack adapter? Did the case come with the rack rails?
I have five of them presently and this one is up for auction now. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&Item=190191684849&Category=38071&_trksid=p3907.m29
The case is an Odyssey cd case: http://www.musiciansfriend.com/product/Odyssey-KCD300-300-View-Pack-or-100-Jewel-Case-CDs?sku=544187
I got it at a Guitar Center. It’s about 17" across and it fits 3 MFs in a snug manner. Because it’s less than 19" across, I took a single space rack panel and cut the ends off with a hack saw. I soldered in 25 stereo connections, 150 solder points, a real pain but worth it. I tried fitting in a Behringer patchbay but there really wasn’t enough space and I thought it was too heavy although it would have been cheaper. I also added some feet so it would stand better.
I’ve been working on building ribbon controllers for about a year and half and I’m on my third version. The first version I built had an instrument cable as a probe for playing pitch, pretty crude. I had a Kurzweil RC which is all Midi and kind of flimsy but it was a lot of fun to play. I wanted an analog RC to play my Moog stuff with but I either didn’t like the look of it or it was too expensive. Here’s a thread with some more info on building RCs.
http://moogmusic.com/forum/viewtopic.php?t=4157&highlight=ribbon+controller
Do RC control GATE functions as well?
The ribbon controller I made, by itself, will not control Gate Functions. By running the carrier out of the 102 through the Audio in of the 107 and then the audio out of the of the 107 into the audio in of the 104, it is possible to trigger the envelope of the 104 by tapping the RC. The Env out of the 104 can then be used to trigger the VCA envelope of the Voyager.
I was asked to put up some pictures.
