Project overview
Envelope filter based on Mutron Micro V fully moded into a more versatile and easy-to-build pedal. Fully responsive to your pick attack.
Including additional Attack and Decay controls for the envelope response. Featuring an LM13700 in replace of the unobtainable CA3080 in the original circuit.
Introduction
The Vutron V is a modern take on the envelope-controlled filter device designed to combine the Mu-tron V’s simplicity with the capability and versatility of the Mu-tron III.
We have included Decay and Attack control for this circuit to allow a wide range of effects suitable for a funky bass guitar, a screaming lead guitar, or anything in between – including electric keyboards and electrified wind instruments.
Also, we have replaced the unobtainable CA3080 with a much easy to source LM13700 (the same one you might have use for compressors such as Sea Lion or the Master Phaser) without any tonal impact.
This compact design is suitable for a 1590b or a 125b enclosure.
Without a doubt, this pedal will deliver all touch-controlled wah effect (autowah) you always wanted and more! This is definitely a must-try if you are interested in getting crazy psychedelic sounds out of your amp!
Controls
- Range: Controls the intensity of the envelope dynamics generated by your pick attack. Fully clock-wise, the greatest the sensitivity.
- Attack: This pot works in direct relation with the Range knob, allowing you to set the fine adjustments on your pick’s attack.
- Decay: With this knob, you can control how long it takes for the envelope to sweep the filter. Higher settings will give you a longer decay time.
- HI/LO: This toggle controls the range of the filter that’s swept.
For further analysis on this circuit take a look at this thread on Free Stomp Boxes Forum.
For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.
Vu-tron V – Building Docs
Vu-tron V – Drilling Template 125b
Vu-tron V – Drilling Template 1590b
furlag7 (verified owner) –
This is 2 of 3 projects i have started a cooperation with PCB GM.
Sounds amazing – on clean is very good – especialy as you arm with fuzz and distortion.
Great quality of sound and board finish.
Kyle Fuglesten –
I just finished this project. I couldn’t get the drill template to print the correct size so I used a 1590b for the first time. The smaller enclosure was a pain, and I prefer top jacks but the board went together easily and was a very straightforward build. It is the first time I have played with an envelope filter. I am still learning what the controls do. I really
like the sounds I can get out of this pedal.