Project overview
The Zombie Chorus is one pedal you’ve never heard of outside the DIY pedals community, but it’s definitely a classic that deserves a place on each player’s pedal board. This circuit was originally designed by John Hollis and has been updated and improved through the years on many online forums.
Here you have our latest version ready to build, so you can make your analog dreams come true with this powerful brain eater Chorus/Vibrato!
Introduction
This one is a circuit you cannot buy as a pedal. This makes it rare to own and gives you tones that non-DIY consumers will never have in their hands. The schematic has been around the DIY community for years, and it is pretty fun to mess with. So we simply added every mod we could research to give you all the possible options this weird wobbling twangy chorus can give. Our design comes with two toggles to let you choose between chorus and vibrato. Normal mode or its own clone setting. I cannot wait to get feedback on how you guys like it!
Controls
Potentiometers
- Depth
- Speed
Switches
- Chorus/Vibrato Toggle
- Normal/Clone Toggle
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.
Zombie Choir II 1v2 – Building Docs (15th December 2022)
Zombie Choir II 1v2 – Building Docs (1st October 2022)
Zombie Choir II 1v1 – Building Docs (6th October 2022)
Zombie Choir II 1v1 – Building Docs (26th July 2022)
Zombie Choir II 1v0 – Building Docs (13th October 2021)
Zombie Choir – Drilling Template
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Ryan (verified owner) –
I initially had some trouble with the first version of this. I couldn’t get the V3207 to work, although the MN3007 worked perfectly. I then noticed that the legs of the potentiometers were touching the back of the toggle switches when inside the enclosure. Once I got the MN3007 in and some protective tape (this is absolutely needed!) over the toggle switches to keep the pot legs from making contact with the metal casing of toggle, this effect worked perfectly! I love the sound of this thing. I just so happened to have a couple of the updated pcbs with the trimpots on the layout and will be building those soon. Looks like the V3207 should work on the updated version. As soon as this is available in stock again, I’ll be purchasing more!