> On 14.11.2017|KW46, at 08:32, robert bristow-johnson > <r...@audioimagination.com> wrote: > > does the Eurorack standard specification equate audio and control voltages > much the same as the old patchboard Moogs? > >
I think, Moog was very special, if it comes to that topic. > issues are: > 1. connectors (does CV use the same 1/8" phone jacks and plugs?, if no, what > connectors are for CV?) > It’s always the 3.5 mm (1/8 inch) mono connector, as specified in IEC 60603-11 and EIA RS-453. > 2. if yes (CV and audio use the same connectors and cables), must CV be full > audio bandwidth? (can one get away with sampling CV at a slower sample-rate > if one were to do a digital module?) > > My impression is, that there’s no real spec dealing with bandwidth issues. Only a few things like mechanical dimensions, power supply, gate voltage and Oscillator CV characteristics are “prescribed”. See here: http://www.doepfer.de/a100_man/a100t_e.htm <http://www.doepfer.de/a100_man/a100t_e.htm> So, the basic rule is: be a good citizen, don’t draw overly much from the PS and don’t send more than +/-12 volts to other modules. Be ready to accept +/- 12 volts at all inputs. > i can read about some of the CV standards (like pitch CV appears to be 1 > volt-per-octave from -3 to +8 volts for the MIDI range, > But it can be more, you can exceed this range. Oscillator have an output swing of +/- 10 volts, so there some oomph. > LFO is ca. +/- 2.5 volts, ADSR is 0 to +8 volts) but i don't see a reference > to the type of connector. perhaps, with silence in this spec, it's the same > as audio and CV is meant to be interchangeable with audio. > > Yes, you can plug around as you like and people do it, it’s meant like that. So, be prepared. > sorry, dumb question from someone who owns no Eurorack. > > There’s no dumb question. In fact, there are a lot of digital modules available for the Eurorack, see here: https://www.schneidersladen.de/en/ <https://www.schneidersladen.de/en/>. They carry an almost complete selection of modules for the Eurorack. Best, Steffan
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