Mod Bus 1 & 2 Question

[metron]

A design flaw? Nah. Mine measure .04 v difference on the 351 when dimed. I believe this is all perfectly normal and falls under the calibration category.

[archer]

Idk, but I'm strictly talking about the amount knobs on each bus and the depth of modulation the achieve when turned all the way up. since they're supposed 2 be identical, i would assume the depth of modulation on each bus would be equal.

[metron]

The amount knobs adjust the voltage. They are directly proportional. What i am saying is that i measured what you are hearing. Mine is not exact either. These are analog synths and subject to drift, imprecision, need for calibration etc. What you are expreiencing is normal. In practice you should not experience any real difficulty performing with the difference in mod bus voltages.

Happy New Year!

[Vsyevolod]

The calibration needed to achieve exactly similar Mod busses would involve a redesign of the circuit IMO. I came into the synth world via PAIA, Moog Modular, and Serge Modular. Of the three, only Serge seemed to give exacting care to make sure everything was not only calibrated to 1V/oct when desired, but that calibration extended to consistency from octave to octave regardless of 1V/oct or not. I've noticed for example in my Moogerfoogers, that I can achieve close to 1V/oct calibration via the CP-251 mixer, but it is only good for 3 or so octaves. My best guess is that Moog is banking on the fact that not many people will call for the higher exacting calibrations and give them a mildly calibrated function at a lower price point. YGWYPF.

Stephen




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