I just got a WMD geiger counter. Id like to be able to send cv from the outputs of my moogerfoogers and/or cv outs from my voyagers cv expander. The manual shows that some signals are from 0 to +5V, others are -5 to +5V and some are somewhere in between. The Geiger Counter uses cv from 0 to +5V. Their manual says that the moogerfoogers work from -2.5V to +2.5V. Can I get just one adapter or do I need an adapter for each voltage combination possibility for me to have the option of sending any cv signal to the pedal? What is the specific cv conversion of the the adapter I need?
You’re looking for an offset control, like what is found on the CP-251 mixer. Add +2.5 V to a -2.5<>+2.5 V wave and it’ll then go 0<>+5 V.
+voltage
/\/\/\/\/\/\/\/\/\/\/\/
-voltage
Check the ranges though. I believe the only negative-going waveforms are on LFOs, I think all EGs are positive (0<>+5).
Assuming the WMD uses op amps (bipolar/biased supply), you might be okay to use a negative-going waveform (YMMV). It may not have any effect though, it might sound like the negative part just “clips” at zero.
+voltage
/\_/\_/\_/\_/\_/\_/\_/
-voltage
excellent. thanks latigid