I should have just walked away and taken a break.
After 2 hours of turning trimmers while unsucessfully attempting to tune my Voyager I was starting to get extremely frustrated and accidentaly turned trimmer U67 instead of RT4.
Does anyone know what U67 is for and how to set it to the correct setting?
I’m so annoyed right now I feel like throwing this @#$%^& thing out the window.
I guess you talking about trimmer RP12 (U67 is a chip). Usually you need a scope for this calibration (triangle glitch of oscillator 2). Also you can adjust this by your ears. Turn the trimmer till the waveform sounds least buzzy.
Have fun,
Rudi
Yes, you are correct. I was looking at the number below. I have a scope I can use…but I’ll give it a whirl by ear. Oh I’m having fun alright… 
Man, what a painful process tuning was. OSC1 is still slightly off from OSC2 and OSC3 but it’s a lot closer than it was at the beginning and the Voyager is at least somewhat playable now. I still get some beating but only on very, very long sustained notes but short lead and bass lines sound passable.
I’m surprised you had so much trouble tuning. I have to tune my Voyager periodically and it never takes more than 15-20 minutes and always works fine.
I don’t use a scope so maybe my tuning isn’t as precise. Or maybe your Voyager had issues mine doesn’t. But I don’t think it’s typical for tuning to be such a hassle.
Hope you have better luck with it from here on.
Rick
Do you mean warming the synth up and adjusting the fine tune knob or opening the case and adjusting the trim pots on the PCB when you say it only takes you 15 minutes?
My Voyager beats and phases when more than one oscillator is used. I have a tuning drift of +/- 10 cents and the phasing is so bad that I get cancellation and the audio drops out. When I attempt to tune it by the time I get 1 oscillator in tune the last one has already drifted out of tune. Trying to get at least an acceptable amount of phasing/beating so the Voyager is actually usable took me hours of going back and forth between OSC2 and 3 (OSC 1 seems fairly stable). Then when I shut it off for the night and turned it back on today it was out of tune again. I’m at a loss…
I’m talking about opening up the back and adjusting the trim pots on the PCB. That generally takes about 15-20 minutes following the procedure that Amos at Moog sent me. I think it’s possible that even after a tuning, once I close the back up, that one or two of the oscillators may drift by a couple cents. But they seem to remain stable after that.
Based on what I’ve seen in the forum, my Voyager seems more susceptible than others to tuning issues when it’s moved around or during periods of higher humidity. But I’ve also had it hold a tune nicely for 5 months.
Based on your awful experience it sounds like there’s something more fundamentally wrong with your synth than normal tuning drift. So you might want to contact Moog directly about that.
Sorry to hear you’ve had so much trouble. I also had a series of issues with mine when I first got it (and I currently have a dead touch screen). But I did find that the people at Moog helped me solve the initial problems and I’ve been pretty happy with it ever since.
I’ve been in touch with Moog on an off for the last few days (well not counting the weekend). Ryan has been very helpful. My Voyager was just tuned by Moog in July but hasn’t stayed that way. Ryan suggested that I open and close the back quickly between trimmer adjustments and that’s helped me get it a bit closer to where I think it should be. I’ve gotten it to the point where the phasing isn’t so bad that it’s causing the audio to drop out and the beating at higher pitches is minimal. I’m going to turn it off and leave it for a couple hours then see if it’s still tuned when I turn it back on later. If not then it goes back to Moog for them to look at.
I guess one of the problems I’m having with tuning this is that I have no frame of reference for what it should sound like if it were tuned properly. Right now when I turn on all 3 oscillators in an INIT patch it sounds like I’m running the Voyager through a flanger or chorus pedal.