As with a lot of my projects they seem to be long running and never get done. Well with the 2020 lockdown I had plenty of time to get through some projects, probably obvious by the volume of things I have been posting lately. Well this one was an idea I have had for a long time, it was based on the high volume of germanium transistors I ended up with from all my builds. Lots that were uncommon, out of ‘spec’ or not usually used in fuzz pedals.
What I wanted was a way to load up 4 different options for Q1 and Q2 and be able switch between them all and bias them up externally by ear. The base of the project was a Fulltone 69 fuzz circuit as it sounded good and was easy to wire up. Initially, I wanted to have it negative ground so it can be used with normal power supplies from other pedals. I had a good crack at doing it in Eagle and making a PCB and never made progress or got it right, this was the part that delayed the project the most, holding onto the idea of a custom PCB.
The alternative plan
I eventually gave in hand wired a unit using 3 layouts from Tagboardeffects.com. The Fulltone 69 Fuzz, The Dallas Rangemaster and the Negative Voltage Inverter. These 3 circuits gave the options to wire it all by hand during the lockdown and get a working prototype working. If it works out and my friends want one as well I can then look at a PCB, but there was no point if it sounded like crap.
MadBeanPedals.com. Once I got the switching working I only had some minor issues which ended up being a dead 7660S voltage inverter. Once that was solved it was just a matter of getting it all in the case together.