• Psyched about today's PCB fab #haul! 1) hopefully the final version of the Moog Realistic MG-1 mod kit PCBs! Finally got a comfortable spacing for the 0.1" connectors which is what I got wrong the last time. Gonna build and tests another prototype using my new "real PCBs" in the next few days! 2) "Universal Basic Input" 😉 A simple little board to add output-to-input feedback (normaled) and an external input (when cable is plugged in) to any synth-- buffered and attenuated, with a level pot and optional line level/high level input level selector switch. Inspired by a suggestion someone made for me to add this feature to the MG-1 kit, I decided to make it its own little board and design it to be universal, and will gradually be compiling a table of resistor values selected to set the gain to match the maximum level of the board's output to the level of the oscillators in the pre-filter mixer for any and every synth that I have schematics for. A quick, cheap, fun mod for any synth. 3) slider adapter boards to allow widely available Bourns PTA series sliders to be used in Roland Jupiter 8s, Jupiter 4s, almost all of the SH series (except 101), RS-09, etc etc. More details on all three coming soon! #throughhole #analogsynth #moogmg1 #realisticconcertmate #synthmods #vintagesynth #synthdiy #vintageroland #pcbfab #customsynth #synthtech
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    Psyched about today's PCB fab #haul! 1) hopefully the final version of the Moog Realistic MG-1 mod kit PCBs! Finally got a comfortable spacing for the 0.1" connectors which is what I got wrong the last time. Gonna build and tests another prototype using my new "real PCBs" in the next few days! 2) "Universal Basic Input" 😉 A simple little board to add output-to-input feedback (normaled) and an external input (when cable is plugged in) to any synth-- buffered and attenuated, with a level pot and optional line level/high level input level selector switch. Inspired by a suggestion someone made for me to add this feature to the MG-1 kit, I decided to make it its own little board and design it to be universal, and will gradually be compiling a table of resistor values selected to set the gain to match the maximum level of the board's output to the level of the oscillators in the pre-filter mixer for any and every synth that I have schematics for. A quick, cheap, fun mod for any synth. 3) slider adapter boards to allow widely available Bourns PTA series sliders to be used in Roland Jupiter 8s, Jupiter 4s, almost all of the SH series (except 101), RS-09, etc etc. More details on all three coming soon! #throughhole #analogsynth #moogmg1 #realisticconcertmate #synthmods #vintagesynth #synthdiy #vintageroland #pcbfab #customsynth #synthtech
  • Someone *else* shipped us their Juno for service in a case whose foam had turned to grave dirt! Aaaaaghhhhh #rolandjuno #juno106 #rolandjuno106 #deathtoevafoam #grave dirt #vintageroland #vintagesynth #synthesizer #analogsynth #synthesizer #synthtech #synthrepair
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    Someone *else* shipped us their Juno for service in a case whose foam had turned to grave dirt! Aaaaaghhhhh #rolandjuno #juno106 #rolandjuno106 #deathtoevafoam #grave dirt #vintageroland #vintagesynth #synthesizer #analogsynth #synthesizer #synthtech #synthrepair
  • This beautiful Sequential Circuits Prophet 10, meticulously restored here at Bell Tone, is now for sale by our client Steve @tapesmith, who is also a purveyor of professional level vintage tape recording equipment. You can find the listing for this Prophet in the TapeSmith shop on Reverb.com! . . . #sequentialcircuitsprophet10 #prophet10 #sequentialcircuits #prophet5 #vintagesynth #sciprophet10 #sciprophet #vintagesynth #analogsynth #synthesizer #synthesizers #analogsynthesizer #monsterpolysynth #synthrepair #synthtech
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    This beautiful Sequential Circuits Prophet 10, meticulously restored here at Bell Tone, is now for sale by our client Steve @tapesmith, who is also a purveyor of professional level vintage tape recording equipment. You can find the listing for this Prophet in the TapeSmith shop on Reverb.com! . . . #sequentialcircuitsprophet10 #prophet10 #sequentialcircuits #prophet5 #vintagesynth #sciprophet10 #sciprophet #vintagesynth #analogsynth #synthesizer #synthesizers #analogsynthesizer #monsterpolysynth #synthrepair #synthtech
  • Little guys. These little Rolands very often have issues because of their build quality and construction. They are actually very delicate, with their brittle PCBs and tiny solder pads, tightly packed plastic bodies, un-nutted right angle PCB mount pots and fragile ribbon cables! . . . . this 303 came in not working at all because of a cracked PCB, now fixed. The 606 was in great shape already and is getting a #tubbutec UniPulse MIDI interface installed! #tr606 #tb303 #rolandtb303 #rolandtr606 #vintageroland #synthesizers #vintagesynth #drummachine #acidtracks
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    Little guys. These little Rolands very often have issues because of their build quality and construction. They are actually very delicate, with their brittle PCBs and tiny solder pads, tightly packed plastic bodies, un-nutted right angle PCB mount pots and fragile ribbon cables! . . . . this 303 came in not working at all because of a cracked PCB, now fixed. The 606 was in great shape already and is getting a #tubbutec UniPulse MIDI interface installed! #tr606 #tb303 #rolandtb303 #rolandtr606 #vintageroland #synthesizers #vintagesynth #drummachine #acidtracks
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  • MOUSE NEST LAMBDA UPDATE! Some of you may remember about this Korg Lambda that came in utterly wrecked and containing the biggest mouse nest we had ever seen. I finally finished it up today but it is never going to be a normal Korg Lambda! The job involved a lot of cleaning and making completely new wiring harnesses since the mice had chewed through so many wires. I admit that I regretted agreeing to work on it several times! Two out of the three top octave generator ICs were dead (luckily FlatKeys makes replacements, 4th slide) and two of the three rare and expensive gating/divider chips in the percussion (piano) section had serious issues. Our client said he never used the piano section and to just skip it, but I got the idea to do a simple mod (last slide) that allows the Ensemble section to take advantage of the Percussion section's best feature: the tremolo. So this "Ensemble only" Lambda now allows you to modulate the ensemble section with vibrato, ensemble effect, AND tremolo! Pretty pleased with the modulation bonanza it now offers. But I'm definitely going to have to leave a note inside for any future techs to explain what the hell is going on in here. . . . #korglambda #korges50 #synthesizer #vintagesynth #analogsynth #synthmods #stringsynth #stringsynthesizer #vintagekorg #synthtech #synthrepair #tremolo #flatkeys
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    MOUSE NEST LAMBDA UPDATE! Some of you may remember about this Korg Lambda that came in utterly wrecked and containing the biggest mouse nest we had ever seen. I finally finished it up today but it is never going to be a normal Korg Lambda! The job involved a lot of cleaning and making completely new wiring harnesses since the mice had chewed through so many wires. I admit that I regretted agreeing to work on it several times! Two out of the three top octave generator ICs were dead (luckily FlatKeys makes replacements, 4th slide) and two of the three rare and expensive gating/divider chips in the percussion (piano) section had serious issues. Our client said he never used the piano section and to just skip it, but I got the idea to do a simple mod (last slide) that allows the Ensemble section to take advantage of the Percussion section's best feature: the tremolo. So this "Ensemble only" Lambda now allows you to modulate the ensemble section with vibrato, ensemble effect, AND tremolo! Pretty pleased with the modulation bonanza it now offers. But I'm definitely going to have to leave a note inside for any future techs to explain what the hell is going on in here. . . . #korglambda #korges50 #synthesizer #vintagesynth #analogsynth #synthmods #stringsynth #stringsynthesizer #vintagekorg #synthtech #synthrepair #tremolo #flatkeys