Page and personal logbook about electronic music, vintage music electronics, DiY, repairs and midi stuff.
For Obsoletetechnology Music, visit the Obsoletetechnology Soundcloud and Bandcamp page.
NEWS:
Added: Moog Voyager Oscillator Repair
Added: Sherman Filterbank Potentiometer cleanup
Added: SCI Prophet 600 Repair (2)
Added: Bluetooth module for vintage car radio
Added: SCI Prophet 600 repair and CPU upgrade
New record release:
Added: Siemens U273b Limiter repair
Added: Siemens W295b EQ repair
Added: WSW 601433 Limiter repair
Added: Ursa Major Space Station Recapping
Finally fixed my PPG1002 synthesizer! (January 2018)
I started a bandcamp page with the intent of releasing my entire musical backlog, starting from 2004 onward. All downloads will be free of charge.
The first couple of releases will be live recordings performed on stage in Kulturfabrik Esch-Alzette under my aka ‘Veste’.
Added a page about the repair of a Ursa Major Space Station SST282: (November 2017)
Added a page about reading out the PROM memory ic’s of an Ursa Major Space Station SST282: (November 2017)
New Obsoletetechnology mixtape on Soundcloud: (October 2017)
A selection of tunes for September.
Added Bang&Olufsen Beovox 80.2 Speaker Re-Foaming: (October 2017)
BEOVOX S80.2 Foam Edge Replacement
Added Univox Mini-Korg power supply repair: (July 2017)
Added Pro-Ject DebutIII repair: (January 2017)
Pro-Ject DebutIII Turntable Repair
True Bypass Module (October 2015):
This is a simple relay based true bypass module for 4 channels of audio. It has been designed to handle 4 balanced audio channels, which means that it could also be used as an 4 channel unbalanced stereo bypass switch.
Midi Filter Tool (December 2014):
This device allows the filtering of midi messages on the midi bus. The unit provides a wide variety of configurations while only requiring a very basic user interface.
The unit is designed as a low cost/low part count device targeted at diy-building and is based on a pic16f1829 microcontroller running at 32Mhz.
Utilization examples:
- Pass only midi note on/off events.
- Let midi sync only through on one single channel.
- Remove everything except CC messages.
- Parse Program Change messages.
Record release on ROHS! Records: (03 February 2014)
A new Obsoletetechnology mini-album ‘Radiant’ now available on pre-order from ROHS! Records:
Shipping out on or around 25 February 2014 http://rohsrecords.bandcamp.com/album/rohs-007-cd-obsoletetechnology-radiant
New Project Added: (01 January 2014)
Low cost CV-Gate to Midi converter allowing to convert analog CV-Gate and CV signals into Midi Note On/Off and Midi CC messages.
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Newly fixed:(16 April 2013)
Sequential Circuits Prophet VS
Added 2 more repairs: (25 March 2013)
Roland VP330 Vocoder Compressor circuit
New EP released on Gotwax!
The second gotwax! EP is a slamming longsided club two-tracker with detroit- and dub-flavoured raw-body-music. The future as it used to be!
Sleeve Front
Preview Tracks:
New repair added for a Yamaha CS5 Synthesizer (11/11/2012)
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Lately repaired: (11/05/2012)
VCF-VCA replacement due on two voices.
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New project added: (07/01/2012)
This Midi to Trigger interface generates a TTL (5V) trigger signal per note over a range of ten notes. It can be used for example as a midi interface for vintage drum-expanders or as a multiple-trigger generator for a modular synthesizer.
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New project added: (04/01/2012)
Tama TS305 Midi Trigger Modification
The Tama TS305 drum-expander, which is a great sounding machine but unfortunately totally lacking of midi control.
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Newly fixed: (19 nov/2011)
TR-808 Handclap circuit repair/BA662 replacement
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TR-606 power supply repair and switch replacement.
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New project added:(01 nov/2011)
DC-DC converter based bipolar power supply for effect units and portable devices.
Some circuits require a bipolar power supply. In a portable unit like an effect pedal, that can sometimes be troublesome, since it is likely that we want to power our effects with a standard 9V or 12V wall-wart or batteries and don’t like the idea of putting an AC mains transformer plus rectifiers and filtering into our boxes. That’s where a Dc-Dc converter based circuit can be an alternative:
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Project Updated: (01/10/2011)
New firmware version for the Midi-CV/Gate converter. The new firmware allows CC Controller assignement and individual CC Midi channel selection.
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Lately repaired:
Another TR-909 for repair on the Bench. This is actually the 4th TR-909 I am repairing! It came with a problem on the bass drum ‘Attack’ parameter, turning the knob wouldn’t do anything. I thought this would be an easy one and a good cleaning of the potentiometer would cure the problem but not so…
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