I had a buddy (personal friend, Next Gen doesn't do custom wiring for customers, so please don't ask.) recently ask for help designing a true bypass looper for his two drive pedals, but with a unique twist. He wanted a third switch, giving the following combinations:
- Switch 1 = Loop 1 on/off
- Switch 2 = Loop 2 on/off
- Switch 3 = Both loops on, regardless what position the other switches are in. Sends the signal back to the other switches when off.
So, the third switch is a master "on", but it doesn't act as a master "off" when turned off. I thought it was pretty odd, but he had his reasons for wanting that combination. In any case, this is what I drew up for him:
One glaring omission that is a major drawback to this drawing is that it doesn't include LED indicators. They are pretty much a MUST on a pedal like this. Luckily, it isn't hard to add them. You'd just use 2x 3PDT switches and 1x 4PDT (special order) instead of what is mentioned above, plus a DC jack (or battery terminal), your preferred LED stuff, and the necessary resistors.
If you're in need of such a niche/unique looper pedal, give this a shot.
Build safe and build awesome!