"LIMITED EDITION of 20
This is an ancient telecommunications switching circuit originally used for something called Single Side Band Modulation. Basically a way to put a bunch of lines within limited bandwidth... Harold Bode (and perhaps others) reclaimed this technology for artistic purposes in the early 1960's, and Bob Moog (in collaboration with Bode) incorporated it into his Modular Synthesizer Systems in the 70's. By then they were calling it a "Ring Modulator" and the circuit had been signifigantly changed.
The modDemod features the original circuit, bare as can be, times 2 so that your audio source material may be "MODDED" and then "DEMODDED." This is exactly how the circuit was originally used... a telecommunication would be modulated, at which point it would be fairly unintelligable, and then on the receiveing end it would be demodulated. As you can imagine, some cool distortions happen on account of the inadequacies of this technology.
I hyper-matched over 350 diodes to get the sets needed to complete this LIMITED run of 20 pieces. Nontheless, there is still CARRIER bleed.
The front panel art work is a tribute to the origins of this wonderful circuit, executed with etched copper, gold plating and white ink on a flat black PCB.
This module is 4HP wide and consumes NO current. The price is $126.
Now Available."
You can find samples and order info on Make Noise.
modDemod video upload by MAKEN0ISE
This is cool! I spend a lot of time looking into old RF and telemetry modulation techniques, and I've been meaning to put together an SSB circuit for a while. It can do some of the same tricks that a frequency shifter does, such as frequency inversion. I may have to order one of these.
ReplyDeletesounds good. i built one of the CGS circuits into a eurorack panel, and the ring mod sound is pretty good, but the bleed happens to be quite rubbish on mine.
ReplyDeletehttp://www.cgs.synth.net/modules/cgsrr.html
hmm i sent him an email this morning but no reply.
ReplyDeleteBrilliant. I wonder if these will fit into the Doepfer minicase.
ReplyDeleteAt 4hp and no power connector, it'll fit anywhere.
ReplyDeleteI've talked to him a couple of times today.
ReplyDeleteLove that video!
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ReplyDeleteif these are still available i'd like one... email sent
ReplyDelete