SMF for DIYStompboxes.com!
0 Members and 1 Guest are viewing this topic.
By the way, I DID put the transistors backwards! *Face palm x2* Now it is working perfectly, a bit low volume but that can be fixed with a little biasing I guess.
Quote from: stonerbox on March 24, 2012, 04:46:44 AMBy the way, I DID put the transistors backwards! *Face palm x2* Now it is working perfectly, a bit low volume but that can be fixed with a little biasing I guess.Yep...by your voltages, you could see something was wired wrong before...here's the voltages of a working unit from ggg...note Q2-4 C all > 7vQ1 Collector 2.2Base 0.73Emitter 0.16Q2 Collector 7.5Base 2.2Emitter 1.6Q3 Collector 7.28Base 0.78Emitter 0.21Q4 Collector 7.63Emitter 0.84Base 0.26
Hello,The FoXX Tone Machine PCB sold by GGG is fine. It's the basis of my DIY one, with a "more" selector added to increase gain and some light mods : - switchable emitter decoupling 10uF cap on the 1st stage ("more" switch).- 1st stage Q is a 2N5088 (Hfe ib10ľA = 400) instead of a 2N3904 (Hfe ib10ľA = 135).- FUZZ and VOLUME pots are LOG instead of LIN.An "awful sounding" pedal... built for the fun... And there's fun in it, indeed !!!A+!
Page created in 0.21 seconds with 18 queries.