Colorsound Tonebender clone help

Started by hairyneil, February 09, 2009, 02:30:01 AM

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hairyneil

Hi, sorry I don't post much but I do lurk from time to time...usually all the tasty finished projects just make me jealous! So after my last visit I decided it was time to try and build something myself again. I found a nice simple schem for a Tonebender drawn by JD Sleep (and a very similar one from fuzzcentral.tripod.com that had one less resistor...?)

I made the board (my first! not as easy as I'd hoped either) and fitted all the components. However the sound I get out of it is considerably quieter that the dry sound and what output you do get sounds like ass!

Does anyone have any experience making a similar pedal? Or have any ideas where I might have gone wrong?
According to one source, two of the trannies don't need to be Ge, but the other does. I used 2x 2N3906 and a Ge AC125 if that helps?

Cheers
Neil

petemoore

Does anyone have any experience making a similar pedal?
  I tried out a MkII Pro clone earilier...
  Or have any ideas where I might have gone wrong?
  Lots of them.
  Too many to go into to be of much use here, this is written real nice, just for such occasions:
  DEBUGGING - What to do when it doesn't work
  ...it has to do with laws of mother nature and helping you find her role in 'what's the problem here?'.
  According to one source, two of the trannies don't need to be Ge, but the other does. I used 2x 2N3906 and a Ge AC125 if that helps? These are all PNP and should be used with a Pos. ground schematic.
   There are Si Tonebenders, Ricky Vance's for instance, but there's a different bias circuit on Q1.   
  Regardless of what transistors are used, the must be the correct polarity and bias should be adjusted in the fuzzface circuit [transistors 2 and 3 are fuzzface circuit].
  Voltage measurements or audio probing will tell us a lot. I'm not sure what the gain/leakage is of the AC125.
Convention creates following, following creates convention.