Moog Music Forum

Hi Everyone, I posted the following in 2010. PLEASE NOTE THAT THESE INSTRUCTIONS REFER TO THE BIG BRIAR MF101. I HAVE NO IDEA WHETHER THEY ARE APPLICABLE TO THE MOOG MUSIC MF101. AND I TAKE NO RESPONSIBILITY FOR THE RESULTS OF ATTEMPTING THIS MODIFICATION WITH ANY MODEL. Cheers, JimF From 2010: Hi e...

Hi People, - PSU recommendations - nothing special really, with my MFs I use fairly basic models bought in Germany (where I was living at the time) with the brand name 'Voltcraft'. But these were basically generic transformer/rectifier/regulator PSUs, and cost about €10. So simply see what you can f...

Hi aztecbride, quick addition to Stiiiiiive's comments. Not sure if there is a protection diode in the MFs, but it would surprise me if there weren't. Nevertheless: High-pitch sound: my MFs (101, 102, 103, 107) suffer from this _if_ I try to power more than one unit from a single power supply (even ...

Hi, about 17-18 years ago, I had a similar problem with my (at the time quite new) Etherwave Pro. It turned out that an inductor in the pitch antenna circuit had gone open circuit, and had to be replaced (under warranty - thanks to Rudi in Germany for a very quick fix). So the coils in the antenna c...

Hi everyone, I actually used something like this years ago in live performance- a (primitive) Technosaurus Cyclodon sequencer (16 steps, just one cv and gate) to provide a single cv to go to an MF cv in (eg cutoff freq or resonance on MF101). It works, as one would expect. I don't own the Korg seque...

HI Mortadela, technical point to be aware of: on the MFs, most (if not all) of the cv inputs are TRS sockets, with +5V on the ring, to power an expression pedal etc. According to the documentation, it's safe to short this out using a TS plug (current-limited circuits), but with some of the MFs this ...

Hi Aaron,

assuming that the Liberation and FreqBox are working ok, I would have expected some combination of cables as discussed, including (perhaps) TRS crossover, to have worked. So it really is sounding like a problem in one of the 2 instruments. Sorry I can‘t be more helpful...

Good luck!

Jim

Hi Aaron, just another quick thought: In making the crossover cable, it might be best to leave the ring unconnected at the FreqBox end, to prevent +5V going somewhere it shouldn't. It really shouldn't be a problem; I assume that the various circuits are buffered/protected, but you never know... On t...

Hi Tokenwelshman, a bit difficult to get clear info from the diagram. But reading it one way, it _could_ mean that the Liberation pitch cv out is on the ring of a TRS socket. So it might be worth trying to make a cable: T - R R- T S - S ie a crossover cable between ring and tip, and seeing if that h...

Hi tokenwelshman, sorry about the delayed reply, I was travelling (actually had a small amount of work in these troubled times!). Caveat: I've never physically seen a Liberation, only photos, so I don't know exactly what it's outputs/connections etc are. I assume, though, that it has a 1/4" (6....

Hi Tokenwelshman, it sounds like the freq cv input of the FreqBox could be faulty. Check this by removing all connections to the FreqBox and connecting its Osc. output (not main out) to a mixer etc. Set it so that you can hear something from the FreqBox's internal VCO. Check that moving the FreqBox'...

Hi Psyordie, if you have an EW Plus, it has cv outputs. With a suitable cv->MIDI converter, this _might_ work. But you would need to check it, as the conversion process can be touchy and the results sometimes unreliable, depending on the combination of devices (theremin, converter, synthesizer etc)....

Hi Polanoyx, it sounds a bit as if you're thinking of the theremin as an effects processor or controller of some sort. With the exception of a control voltage-enabled theremin (eg Etherwave Plus) controlling CV-enabled gear (eg a synthesizer or filter etc with CV inputs), the theremin is not actuall...

Sorry, typo in the ISBN number of Carolina's book. Should be

ISBN 3-933 757-08-8

Jim

Hi Buffaloris, using the most common playing technique, of different degrees of curvature/extension/splaying of the fingers of the right hand to produce different pitches, it is possible to produce the same pitch with different positions, eg, a note played with fingers extended can also be played wi...