Apocalypse Audio - Thundertone

Posted by Neil mcNasty on Oct 25, 2016; 7:29pm
URL: http://guitar-fx-layouts.238.s1.nabble.com/Apocalypse-Audio-Thundertone-tp33783.html

A great sounding pedal version of the Supro Thunderbolt using the lovely Tesla 103NU71 Germaniums.
The tone control is specially interesting... (I used a 3.3nf instead of the specified 3nf)
I tested it on the breadboard first, but had to build it on Perfboard, since I'm out of Veroboard at the moment. So I have not had the opportunity to verify this layout yet...
Link to Perf/PCB: http://effectslayouts.blogspot.no/2016/09/apocalypse-audio-thundertone.html
Link to Schematic: http://s75.photobucket.com/user/rnfr/media/THUNDERTONESCHEM.png.html

I've been looking over the layout several times now, so I believe it should be safe to build.

Recommended mods/stuff to try out:
- Put the 4.7nf input cap on a switch with a 47nf in the other position for more dirt and bottom end.
- Flip the transistors 180, you will get more grit and gain out of it. IOW: they work both ways (probably due to leakage), so socket the transistors and try it out!

ENJOY!