Was just wondering…is there anything wrong with sending audio to any of the voyagers cv inputs? It seems to work ok…but will this screw up any of the inputs or something???
I wouldn’t do it. Different impedance might ruin the circuits.
Isn’t the point of voltage control that anything can control anything? Those CV inputs aren’t just for slow controls like envelops, LFOs and pedals. Go forth and experiment!
Running an audio freq into pitch control voltage becomes an interesting frequency modulation.
Its a real shame that the individual oscillator outputs are not available on the VX expander. CV inputs are not just for slow moving voltages.
There is a LOT of things you can do with a CP-251 processing line level audio signals. I will post an article about that soon.
yeah i really wish you could get the individual outs for each osc…
but so anyways…then as far as you guys know there is no harm in doing so…no impedence mismatch or whatever?
Totally agree. However I miss Resonance and EG amount, both in and out CV’s even more.
Edit : Actually you can control individual Osc’s frequencies through the Mod Busses. I don’t remember the exact settings I used, but I was controlling
Osc2 and 3 individually last week in an experimental set up via mod1 and/or mod2 CV inputs on the Voyager. The setup used Osc1 as fixed high pitch and Osc2 and 3 were set to a wobbling bass modulated by an external LFO, something like that.
It’s the load of the output transducer or circuit that is the driving factor governing mismatched impedance. On the CP-251, input impedance is very high (50K and 100K on the mixer’s input, similar on other inputs), so it’s a non issue.
The oscillator levels are found in the modulation destination settings in the EDIT menu. One need to switch the Source fully clock wise to PGM (= programmable?) first to get the effect on one of the modulation busses.
I love all those possibilities hidden in the menus for more complex, nearly modular possibilities.
Menus ? No such thing, my Voyager is an OS 
Sorry, but this is incorrect.
Patching audio into a CV input is the fundamental basis for frequency modulation. Its not only designed to handle it, but encouraged!
Audio levels are usually 3v +/- and most of the voyager CV inputs have an operating range of 5v +/- and are capable of receiving up to +/- 7.5v.
When in doubt, use a voltmeter to watch your levels, and NEVER use a mult as a mixer 
As far as impedance is concerned, since these are DC circuits there is no functional difference between impedance and resistance, and the resistance and current draw from the CV inputs are extremely minimal so i would not be very concerned with overloading the circuitry on the transmitting device.
If you are really concerned with overloading the circuitry on the transmitting device then best bet would be to pass it through some kind of buffer such as the CP-251 mixer or buffered multiple if you have one handy.
Actually you can control individual Osc’s frequencies through the Mod Busses.
I have done this as well with some moderately unsatisfactory results.
I suspect that the CV inputs to the mod buss are being digitized and sent through the control module, so i ended up with alot of artifacting when i tried to FM individual oscillators at higher frequencies through the buss.
I do not think the voyager OS would have this problem since it should be a direct voltage path from the cv to the buss to the destination.
Maybe we can beg and plead to have individual osc CV in/out as a factory mod?
Thanks for the info chinard…finally a proper answer!
Anyway…about wanting individual cv in/out for each osc…with the lfo and vx351 this can sort of be done by taking the lfo into the audible range by using either the modwheel or keyboard pitch to control its rate…then u can use the square and triangle outs from the vx351…im not sure if it can go to very high freqs though…hmm i just got an idea send the lfo out like this and then to the ext instrument in… using the lfo as an overdriven sub osc haha sik one… 
This will work though wont it… no impedance issues lol
seriously 
Its a shame that people have come to think of CV as only keyboard voltages, slow LFOs and envelopes. Moog never suggested that in his original AES paper. But because so many cut down synths hardwired the LFO and envs (I guess the minimoog was part of that too), people thought that was all you plugged into these CV inputs.
I’m sure that buffering on indivudal osc inputs and outputs would be needed for a factory mod of a Voyager, but it would really open up the tonal possiblities…