Triple LPG in MU Format
Projecttitel: Triple LPG in MU Format
Status: finished
Startdate: 04/2020
Duedate: 05/2020
Update 12/2024
Manufacture link: http://www.naturalrhythmmusic.com/lopass.html
check my page too: Buchla Lopass Gate 292c
Panel and PCBs from Synthcube:
Update 2024:
to latest 3.4 pcb version (synthcube edition)
Muffwiggler Thread:
https://www.muffwiggler.com/forum/viewtopic.php?f=24&t=134518&start=50
BOM Switches:
3x 3P3T Switch: mouser: 612-1003P3T1BM1QEH (was used in prev. build but not available in Germany atm.
update 2024 switches:
3x
https://www.tme.eu/de/details/7101syzqe/kippschalter/c-k/
and 3x
https://www.tme.eu/de/details/7303syzqe/kippschalter/c-k/
Important INFO: the hole of the Audio Out must be changed (drilling) to the panel border side otherwise the switch and jack are too close and will not fit in a correct alignment.
BOM:
normally you don't need the TL074 and the resistors around.. look in the schematics - its only for the CV and Audio "Mixer" - which isn't needed here.
Wiring:
the following wiring do not match with the schematics ( I didn't used this wiring !!) please look in the schematic as described
Schematic:
(the wiring was used by me for the Triple LPG - but you must turn the switch 180degrees that it match with the panel silkscreen)
Tip:
I used 10KA Potentiometers for the bottom mixer, I just connected from each LPG output (output jack) the signal to the bottom mixer poti, an 1K pullup resistor on the wiper
Take care on the Jumpers (routing with or without CV/Audio Mixer)
in my configuration I used the direct way - without the mixers.
Related content
how to bugfix: https://diysynth.wiki.dsl-man.de/wiki/spaces/SKM/pages/336101402/How+to+bugfix
non commercial pages, all infos are best can do without warranty, without liability.