Advertisement
Quick Links
PROJECT NAME
LUMITRON
BASED ON
Mu-tron® III
EFFECT TYPE
Envelope filter / auto-wah
PROJECT SUMMARY
The very first commercial envelope filter effect, first released in 1972. Famously used by Bootsy Collins,
Jerry Garcia and Stevie Wonder among many others.
Actual size is 2.3" x 2.42" (main board) and 1.78" x 0.86" (bypass board).
LUMITRON RESONANT FILTER
BUILD DIFFICULTY
Intermediate
DOCUMENT VERSION
1.0.0 (2023-09-08)
1
Advertisement
Related Manuals for aion Lumitron
Summary of Contents for aion Lumitron
- Page 1 The very first commercial envelope filter effect, first released in 1972. Famously used by Bootsy Collins, Jerry Garcia and Stevie Wonder among many others. Actual size is 2.3” x 2.42” (main board) and 1.78” x 0.86” (bypass board). LUMITRON RESONANT FILTER...
-
Page 2: Table Of Contents
The Lovetone Meatball (available as our Spectron project) was based on the Mu-tron III with a greatly expanded feature set. If you wish the Lumitron had a lot more knobs and switches, it’s worth a look. USAGE The Lumitron has three knobs and three switches: •... -
Page 3: Parts List
LED current-limiting resistor. Adjust value to change LED brightness. Film capacitor, 7.2 x 3.5mm 10pF MLCC capacitor, NP0/C0G 100n Film capacitor, 7.2 x 2.5mm Film capacitor, 7.2 x 2.5mm Film capacitor, 7.2 x 2.5mm Film capacitor, 7.2 x 2.5mm LUMITRON RESONANT FILTER... - Page 4 16mm right-angle PCB mount pot PEAK 250kA 16mm right-angle PCB mount pot VOL. 100kA 16mm right-angle PCB mount pot DRIVE DPDT on-on Toggle switch, DPDT on-on FILTER DPDT on-on-on Toggle switch, DPDT on-on-on RANGE DPDT on-off-on Toggle switch, DPDT center off LUMITRON RESONANT FILTER...
- Page 5 Switchcraft 111X or equivalent. 1/4" mono 1/4" phone jack, closed frame Switchcraft 111X or equivalent. 2.1mm DC jack, 2.1mm panel mount Mouser 163-4302-E or equivalent. 3PDT Stomp switch, 3PDT 125B Enclosure, die-cast aluminum Can also use a Hammond 1590N1. LUMITRON RESONANT FILTER...
-
Page 6: Build Notes
Mu-tron’s process for selecting a resistor value is not known. In the Lumitron, as with many other DIY clones, we’ve made this a trimmer so that the resistance value can be adjusted to preference. Start with the trimmer in the middle and turn it to the left and right to see how it changes the sound, then leave it where it sounds best. -
Page 7: Schematic
HI (CENTER) HI (CENTER) 120k GAIN 220k 220k IC1B IC2A IC2B IC1A RC4558P RC4558P RC4558P RC4558P OPTO1B OPTO2B 100n 560R FILTER 1N914 2.2uF 120k DOWN DRIVE A 330R 120k 1N914 IC3A RC4558P IC3B RC4558P 4.7uF DRIVE B LUMITRON RESONANT FILTER... -
Page 8: Drill Template
DRIVE FILTER RANGE x: -0.85, y: +0.41 x: 0, y: +0.41, ø1/4” x: +0.85, y: +0.41 ø1/4” ø1/4” CENTER (0,0) FOOTSWITCH ENV. x: -0.775, y: -1.775 x: 0, y: -1.775 x: +0.775, y: -1.775 ø5/16” ø15/32” ø5/16” LUMITRON RESONANT FILTER... -
Page 9: Enclosure Layout
ENCLOSURE LAYOUT Enclosure is shown without jacks. See next page for jack layout and wiring. 125B LUMITRON RESONANT FILTER... -
Page 10: Wiring Diagram
WIRING DIAGRAM SNS PGND OUT GND +V +V JACK GND JACK SNS GND PCB 125B LUMITRON RESONANT FILTER... -
Page 11: Document Revisions
(In other words: you don’t have to go out of your way to advertise the fact that you use these PCBs, but please don’t go out of your way to hide it. The guitar effects industry needs more transparency, not less!) DOCUMENT REVISIONS 1.0.0 (2023-09-08) Initial release. LUMITRON RESONANT FILTER...
Need help?
Do you have a question about the Lumitron and is the answer not in the manual?
Questions and answers