MATRIXSYNTH: Buchla Benjolin Test 1

Friday, June 07, 2019

Buchla Benjolin Test 1

Published on Jun 7, 2019 Todd Barton

"A new, very limited edition of Rob Hordijk's Benjolin project in Buchla format by Anto."

Update: second video added to the playlist above.

"Audio outputs normaled :

- Square 5 pk-pk
- Triangle 4 pk-pk
- XOR 5 pk-pk
- PWM 5 pk-pk
- VCF Out is approx. line level

I've added a jumper to disconnect the PWM that is internally wired to the filter.

- 1.2V Inputs _ these vcos are not super stable but 3 octaves tuned decently_ there's trimmers on the back to adjust each vcos

- CV Attenuverters

- Clock In & Serial In : Feed with external signal (at least 2V) Trig, gate, or CV. External is activated when switch is down.
Pulser from 208 is a bit to short to fire it. Works with 281, 245, TSNM, 259 square and saw waves, uStep, Klee sequencer, LFO, 266 outputs, 208 envelope...

- Bit 1/2/3 : Gate Out 15v - when led light on : Gate=0

- Stepped : It's the Rungler CV output, 8 stepped voltage (S&H sort of). Maximum range from 0.5 to 12v. It can be trimmed.
One "scale" I find useful to shift the stages of the 245. 1,2v/2.6v/4v/5,4v/6,8v/8v/9.5v/10.8v

- Switch mode : 8 steps / Random / 16 steps

- PushButton : Manual Trigger Serial In = change the pattern of the Rungler when pressed.

- 2-pole VCF with Rungler CV control and attenuverter."

Original prototype.

No comments:

Post a Comment

Comments are moderated. Constructive feedback on gear is welcome, insulting people is not.


Patch n Tweak

© 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.