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Sunday, March 05, 2017
ARP 2600 Keyboard Semimodular SN 130128
Uploaded on Mar 7, 2017 Michael Barber
"This demo is mainly to showcase the solid working condition of the synth and many of the most basic functions. Here's what's being shown: clean keyboard contacts, each VCO, each waveform output of each of the VCOs, some filter controls, signal mixer, envelope generator, keyboard portamento, keyboard filter tracking (removed the shorting plug), ring modular, VCO in LFO operation, square wave LFO through the lag processor, S&H noise as modulator, sawtooth LFO through S&H, basic oscillator mixing.
There are more basic features I didn't even touch upon– envelope follower, preamp, CV processors, signal mult, variable noise generator, manual trigger, etc, but thought this would provide enough peace of mind that it is a highly functional and well-maintained synthesizer. This integrates particularly well into modular synth setups."
via this auction
"FOR AUCTION: an original 1971 Tonus logo ARP 2600 semi modular analog synthesizer (model 2600P V1.0 according to discretesynthesizers.com, this is a pre-26xxx serial), complete with its original model 3604-P keyboard. I’ve owned (and maintained) this synthesizer for about 7 years, purchased locally from its original owner who had it in the back of his closet for years.
Condition: physically and electronically, this is among the nicest ARP synthesizers you’ll find from this era- even the Tolex on the synthesizer is in great shape (only the removable lids have notable peeling and I probably wouldn't want to rely on them for heavy transport). Electronically, I initially had it restored by Greg Montalbano in Oakland (analogsynthservice.com) who, in addition to general restorative cleaning, also recapped the power supply, replaced the epoxy’d filter with the lower noise CMS 4012 and replaced the internal speakers with new ones purchased from the late Kevin Lightner. It has subsequently been maintained by Chris Hewitt / thisoldsynth.com who I had replace the epoxy’d VCO 2 submodule with a new CMS 4017; you can see his blog for the repair here. Both of the original ARP submodules that I've replaced will be included..."