i recently bought a VX352 so that i could run my RME from my modular, and i noticed that that the RME gets progressively flat as i go up in pitch (quite badly), when sending CV s from my modular.
the same CVs track reasonably accurately with all my other oscillators, so i can only presume that the RME needs calibrating.
i have also checked the CVs with a digital multimeter and they are pretty accurately 1V per octave
can anyone tell me which pot is used for this calibration ?
cheers in advance
CV to pitch calibration - is it possible ?
I get similar results.Using a digital VOM and a Roland tuner, I get
the following input to the pitch CV in on a Voyager PE:
0 V no change
+1.028 up one octave
+2.05 up two octaves
+3.08 up three ovtaves
+4.11 up four octaves
-1.028 down one octave
-2.05 down two octaves
My Voyager does not have 1v/oct. scale on the pitch CV input.
Very noticable using an analog sequencer with a quantizer scaled for 1 volt/octave, my Voyager plays flat up the scales. Here was Moog answer to this in another post.
the following input to the pitch CV in on a Voyager PE:
0 V no change
+1.028 up one octave
+2.05 up two octaves
+3.08 up three ovtaves
+4.11 up four octaves
-1.028 down one octave
-2.05 down two octaves
My Voyager does not have 1v/oct. scale on the pitch CV input.
Very noticable using an analog sequencer with a quantizer scaled for 1 volt/octave, my Voyager plays flat up the scales. Here was Moog answer to this in another post.
Amos wrote:if you are talking about pitch-CV from the Performer used to control the RME, you may need to run the pitch-cv output through the 352's active mixer in order to scale the voltage to track exactly. It may take a bit of tweaking to dial it in precisely but it should be do-able in this way.
Cheers,
Amos
When trying to run my modular from my Voyager I ran into the same thing. It output close to 1V/Oct but it is bipolar. OV is not the 1st (lowest) note possible. It is somewhere about the 3rd octave on a piano. I eventually had to buy a MIDI/CV convertor to drive my modular. I was able to do it using a Q125 signal processor to scale and offset the voltage, but you lose the use of that module and risk someone bumping it and ruining the fiddly tuning.
"Music expresses that which can not be said and on which it is impossible to be silent."
thats interesting, thats probably why i'm not getting it to work with the 352.Just Me wrote:When trying to run my modular from my Voyager I ran into the same thing. It output close to 1V/Oct but it is bipolar. OV is not the 1st (lowest) note possible. It is somewhere about the 3rd octave on a piano. I eventually had to buy a MIDI/CV convertor to drive my modular. I was able to do it using a Q125 signal processor to scale and offset the voltage, but you lose the use of that module and risk someone bumping it and ruining the fiddly tuning.
but yes, its dangerous to try and do a gig with a delicate setting on the 352 holding all the tuning together.
Just for fun, I just tried to run my Voyager with CV from the Encore.
It's easy to transpose as any key you press on the Voyager sets the transposition. It does however go flat as you go up the scale so it isn't responding to 1V/Oct. If I ever want to do this on a regular basis, I'll have to save a setup in the Encore with the needed scaling to play in tune.
It of course tracks perfectly through MIDI. So the tracking error is both directions with CV's.
It's easy to transpose as any key you press on the Voyager sets the transposition. It does however go flat as you go up the scale so it isn't responding to 1V/Oct. If I ever want to do this on a regular basis, I'll have to save a setup in the Encore with the needed scaling to play in tune.
It of course tracks perfectly through MIDI. So the tracking error is both directions with CV's.
"Music expresses that which can not be said and on which it is impossible to be silent."
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