MATRIXSYNTH: Toppobrillo Dual 281 (Grayscale panel w/mods)

Friday, September 18, 2015

Toppobrillo Dual 281 (Grayscale panel w/mods)

Note: Auction links are affiliate links for which the site may be compensated.
Published on Nov 22, 2014 ken mosley

"Just finished building a few Toppobrillo dual 281s with some grayscale panels. The clip shows various functions as well as demoing the addition of a manual trigger envelopes and push starting the LFO (a known issue with the build). The addition of an illuminated pushbutton switch add to the overall module's 'playability'."

via this auction

"Dual 281 Function Generator w/LED trigger switch mod (Eurorack)

The Dual 281 is an ASR/AR/LFO generator with voltage controlled inputs for Attack and Decay. This essentially half of the original Buchla 281 but designed for Eurorack Format modular synths. Make Noise's Maths was designed to mimic the 281 and Serge's Dual Universal Slope Generator. Several of these were built for a non-paying customer and now just trying to recoup costs on this last one. These were built with grayscale panels using Toppobrillo PCBs and offered to the DIY community. Wima caps used throughout with the exception of the 1.8nF film caps (Kemet). NKK switches long life switches, long life and low ESR caps for power decoupling. Blue LED switches allow for playing the module in real time...The FG can be triggered by finger. Check the vids. These were only mounted in a lab case and burned in for extensive testing."

No comments:

Post a Comment

Do not insult people. Do not ask if listings are still available. Click through auction links to check yourself. Posts and pics remain for historical purposes only. To reduce spam, comments for posts older than one week are not displayed until approved, usually same day.


Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.