ZEN Instruments

A blog about electronic instruments from a DIY standpoint

Thursday, December 22, 2016

TR-606 Sync and Run/Stop Repair

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So, I got a 606 with sync and start/stop issues. It would always be in play mode, but the "RUN" LED wouldn't turn on. Neither ...
1 comment:
Sunday, September 11, 2016

Pearl DRUM-X Schematic

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Pearl's DRUM-X is a somewhat overlooked, five voice, analog drum synthesizer. It's intended to be connected to drum pads, similar to...
31 comments:
Monday, July 4, 2016

Resurrecting "C Programming for MIDI"

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I've been playing with a DOS computer that I recently added to my studio. It's pretty limited, but it still speaks MIDI. Finding o...
2 comments:
Saturday, June 18, 2016

CZ 1000 Noise Fix (DAC Adjustment)

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So I picked up an as-is CZ 1000. It started off terribly distorted, but after jumping a few corroded traces it started to sound more normal....
9 comments:
Monday, June 13, 2016

DR 220 Mods

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A while ago I had the opportunity to work on a friend's DR-220. Researching it I found a copy of the service manual, but not much else. ...
Sunday, May 1, 2016

Werkstatt Breakout

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Here's a quick and dirty solution to the Werkstatt's desperate need of proper connectors. Moog has their offering, but I think this ...
Thursday, December 17, 2015

Ibanez FL5 Flanger Schematic, PCB and Mod

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If you look around, a lot of pedal sites describe the FL5 as a cutdown FL9. Strangely, no one seems to have a clean schematic for the FL9 or...
2 comments:
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