Friday, 8 March 2013

Colorsound Jumbo Tonebender

A few people were after this one and as it's pretty close to Colorsound Bass Fuzz, i decided to tweak the layout for a Jumbo. Notes on Phillip Bryant's schematic note that this circuit is apparently 1:1 with Colorsound 3-knob Tonebender re-issue..




12 comments:

  1. Thanks for this - I'm just visually comparing it to the Bass Fuzz, and those 500pF caps look a little lost (and located slightly differently) when compared to the Bass Fuzz's 1nFs.

    Thanks for this tho' :-)

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  2. it seems to me that a capacitor is missing ,between Volume3 and tone 2, and 220n capacitor on the collector of q1, which should be 0.1 uf

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    1. Good call. Did miss those completely. Now fixed.
      +m

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  3. I just made the changes on the pedal, now is perfect ;)
    thanks for the layout, great job!

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  4. anyone know a suitable replacement for bc184c? I'm having trouble finding any at reasonable prices. Preferably something mouser carries. :)

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    1. I used BC109C with a good result, approximately 500 hfe

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    2. Thanks for the advice. One last question. I dont have any 3nf on hand. But I do have some 3.3nf and 2.7nf How much would eaither change the tone do you think and which one would you go with?

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    3. You're welcome!
      I think you can use the 3n3 capacitor,better than the 2n7, I've also used a 3n3 and for me the sound is very clear, with the tone control wide open( for my taste too treble), for me a 4n would be better, like a big muff ...or even larger
      I think it does not affect much the original sound,there is not much difference between a 3n3 and a 3n...

      regards

      Tony

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  5. Aw. This one doesn't work for me, I've just been checking over it for hours.

    On Bryant's schematic, there appears to be a 22 uF cap going from 9v to ground. The bass fuzz has 47 uF like you have in this schematic, did you miss it or was it a mistake in the original schematic? I doubt this will make it work for me though.

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