MiniMult
This is a basic utility module. Passive multiples are essentially just a bunch of audio jacks connected together at the tips and ground.
I often use a mult to split the output of a single ADSR between a VCA and Filter module.
Another way would be to split a controller’s gate signal between two independent ADSRs.
Bill of Materials
- 7 x 3.5mm audio jack (https://www.thonk.co.uk/shop/thonkiconn/)
Schematics
In this version (v1.1), the jacks are divided into two groups.
KiCAD files for this project is also on Github.
PCB
The module is split into two separate boards: the front panel and the control panel. The boards are held together by the jacks, so no additional standoffs required.
PCB shops use Gerber files for etching copper traces, printing labels, drilling holes, and other manufacturing steps. You can download my zipped Gerber files for a version you like and upload those into their website.
My PCBs in this series were sponsored by PCBWay – a great option for prototyping. You can order the MiniMult PCB directly from their community page:
Versions
1.1. Split the jacks into 2 groups
Top 3 knobs are linked together. Bottom 4 are linked together.
| Title | Filename |
|---|---|
| Gerber Files | MiniMult 1.1 - Control.zip |
| MiniMult 1.1 - Front.zip |
1.0. Initial design
This works great! All 7 jacks are connected together.
| Title | Filename |
|---|---|
| Gerber Files | MiniMult 1.0 - Control Panel.zip |
| MiniMult 1.0 - Front Panel.zip |
Conclusion
Not much to say here. It’s a 2HP mult. Let me know if you’ve built it! Tag me on Instagram @benjiaomodular.