Hi everybody, fisrt of all I'm from Italy so sorry for my english. I've build a tonebender markII based on fuzzcentral's schematics http://fuzzcentral.ssguitar.com/mkII/mkIIlayout.gif (http://fuzzcentral.ssguitar.com/mkII/mkIIlayout.gif).
I've bought three matched transistors (72 on Q1, 102 Q2, 105 Q3). The result is that this fuzz is too aggressive, with the control tone opened I have also unwanted notes, it sounds like an octaver. Can I add a pot to control the gain ammount? Or disassemble the pedal and buid a mark III? Thanks in advance.
I've had this problem before. Try soldering in a small resistor between the pot to ground. Use the value that the pot measures just before it starts acting up so it's never fully on but you still have the full control range.
Quote from: therover on October 23, 2012, 12:01:06 PM
Hi everybody, fisrt of all I'm from Italy so sorry for my english. I've build a tonebender markII based on fuzzcentral's schematics http://fuzzcentral.ssguitar.com/mkII/mkIIlayout.gif (http://fuzzcentral.ssguitar.com/mkII/mkIIlayout.gif).
I've bought three matched transistors (72 on Q1, 102 Q2, 105 Q3). The result is that this fuzz is too aggressive, with the control tone opened I have also unwanted notes, it sounds like an octaver. Can I add a pot to control the gain ammount? Or disassemble the pedal and buid a mark III? Thanks in advance.
before you make any changes, you should make sure that your voltages are close to what they should be.
note that the voltages on the fuzzcentral site are wrong:
http://fuzzcentral.ssguitar.com/mkII.php
Q3C should be in the 7 - 8.5V+ range....
http://stompboxes.co.uk/forum/viewtopic.php?f=10&t=7185&p=110299#p110299
Quote
note that the voltages on the fuzzcentral site are wrong:
I suspected...thanks I'm gonna check it out