I had a request for a vero of the Mastotron, so here’s the Woolly Mammoth which is virtually the same, with the Mastotron just having an additional 100K linear pot which the input is taken to before the first capacitor.
The new input wiring with the Relax/Pull pot can be seen on my tagboard layout here:
http://tagboardeffects.blogspot.com/2010/02/zvex-mastotron.html
This layout is also verified:
Geiri’s demo of his build:
And Finally. In case anyone runs into problems, here are thevoltages from a working board with all the pots maxed.
Supply at 9,33V
Q1 Emitter: 0V, Base 0,58V, Collector 1,2V
Q2 Emitter: 0,88V, Base 1,2V, Collector 2,3V
Yours should be around 10% away from these.
