So I’ve got a MFB Step 64 hooked up to my Voyager OS. I cannot get the two the speak in the same tuning. I’ve got a sequence programmed on the Step64 where all the steps are tuned to one note ‘C2’. The Voyager plays that as an ‘A’ what am I doing wrong? It seems I’ve read in a couple places that this combo plays well together with no tuning issues, so I’m assuming operator error (I’ve never played with a sequencer, in any case!)
Here are my connections:
Step64 CV1 - OS Pitch
Step64 GATE1 - OS Gate
Anyone with experience with this particular setup? I also have a CP-251 here which I’ve read can be used to somehow to rectify the difference between the 1v/octave the Step64 is outputting versus the .01356v or whatever the Voyager OS is calibrated to - I’m just not sure what connections to make to utilize it!
The Step64 apparently doesn’t have a buffered CV output, making it sensitive to the impedance of the patch cords. As a result, the patch cords that came with it are matched to the unit, so that their impedance will not affect the control voltage levels. However, if you attempt to extend their length by connecting additional patch cords to them, or by routing them through the CP-251, then the impedance load increases resulting in lower control voltages being received by the oscillator, which then causes the note values to be flatted accordingly.
In any event, my experience is that, when the Step64 is properly patched to the Voyager, the Voyager tracks it nicely.
mayidunk, how exactely is your cable connection set up?
tomorrowstops, did you press a ‘C’ on the Voyager? This will be the reference key (as in keyboard key) all incoming pitch is scaled to.
Also, you could check whether the MFBs control voltage outs are properly calibrated. Hook up a DMM and measure pitch control voltage while sending out a reference ‘C’ and another ‘C’ some octaves above the reference ‘C’.
