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Wednesday, 9 January 2013

Firecracker Overdrive

Small, quick and dirty.


8 comments:

  1. This video shows the Firecracker with 3 pots. The texture would be the 20k trimpot replaced by a surface mounted pot?
    https://www.youtube.com/watch?v=WJ4mkOF7Ng8

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    Replies
    1. Can't say for sure as that trimmer is used to bias the MOSFET.
      +m

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    2. I've asked the guy on his YT page. I'll get back to you with his answer.

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    3. In that video, the texture pot sounds like its just adding or taking away bass. Perhaps its an input cap blend?

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    4. Turns out it's completely different pedal. here's what the builder says;
      "The name I came up with myself, had no clue someone had done it before I did. The schematics you gave is a completely different thing, someone else's idea. The trimpot there is setting the transistor bias I think.

      This one has three stages, one is a preamp, the second one is one-pot tone control (texture knob) and the last one is the actual distortion."

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    5. Makes sense. The schematic i did this from is signed by Andrew Carrell and it's dated march 2005.
      +m

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  2. you can tag this one. its verified. one thing though, i think the capacitor off of the drain should be 100nf, not 10nf? i set the bias at 4.5v and that sounded good to me. sounds pretty good for such a little thing. worth the few minutes it takes to build it.

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