Uploaded November 2011 | Updated September 2026, 2 days ago
Download here: acreil.bandcamp.com/album/miscellaneous-synth-demos
User and service manuals here: acreil.wordpress.com/2017/05/02/user-and-service-manuals-for-wersi-mk1-ex20-ex10r-dx10
Cartridge ROM dumps here: acreil.wordpress.com/2019/05/17/wersi-mk1-ex20-cartridge-eprom-dumps
Ratings disabled due to glitch.
Multitracked Wersi EX20 with Ibanez SDR-1000 reverb. This synth is capable of some highly unusual sounds when (in)correctly programmed, so I thought I'd showcase that side of it. It's sort of a half tribute and half parody of 70s computer music (i.e. Jean-Claude Risset, John Chowning, etc.). I find that sort of music tends to be sometimes brilliant and sometimes ponderously arbitrary (at least from the listener's perspective), so I tried to get a little of each in there.
Due to the bizarre user interface and poor/unavailable documentation, I think very few people have programmed these synths to this extent. At the time I think I only had the German user manual. I have the English manual now, but it omits much of the sound programming stuff.
Most of the interesting territory comes from doing strange things with the pitch and amplitude envelopes. Each stage of the envelope can be assigned a "module" that takes two parameters and does some function like noise modulation, increment, delay, linear or exponential rise or fall, loop, etc. It's even possible to make nested loops. These things don't necessarily behave the way you'd expect (are these undocumented features or bugs?), so it's basically a trial and error process, but the results can be very surprising. Recorded 2010?
Check the (NiCd) memory backup battery if you own one of these. They can leak and cause damage. The RAM cartridges also contain NiCd batteries.
Download here: acreil.bandcamp.com/album/miscellaneous-synth-demos
User and service manuals here: acreil.wordpress.com/2017/05/02/user-and-service-manuals-for-wersi-mk1-ex20-ex10r-dx10
Cartridge ROM dumps here: acreil.wordpress.com/2019/05/17/wersi-mk1-ex20-cartridge-eprom-dumps
Ratings disabled due to glitch.
Multitracked Wersi EX20 with Ibanez SDR-1000 reverb. This synth is capable of some highly unusual sounds when (in)correctly programmed, so I thought I'd showcase that side of it. It's sort of a half tribute and half parody of 70s computer music (i.e. Jean-Claude Risset, John Chowning, etc.). I find that sort of music tends to be sometimes brilliant and sometimes ponderously arbitrary (at least from the listener's perspective), so I tried to get a little of each in there.
Due to the bizarre user interface and poor/unavailable documentation, I think very few people have programmed these synths to this extent. At the time I think I only had the German user manual. I have the English manual now, but it omits much of the sound programming stuff.
Most of the interesting territory comes from doing strange things with the pitch and amplitude envelopes. Each stage of the envelope can be assigned a "module" that takes two parameters and does some function like noise modulation, increment, delay, linear or exponential rise or fall, loop, etc. It's even possible to make nested loops. These things don't necessarily behave the way you'd expect (are these undocumented features or bugs?), so it's basically a trial and error process, but the results can be very surprising. Recorded 2010?
Check the (NiCd) memory backup battery if you own one of these. They can leak and cause damage. The RAM cartridges also contain NiCd batteries.
