This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Monday, September 21, 2015

Devi Ever Electric Brown

Here's a unique little circuit from Devi. Plenty of gain on tap to go from just a boost, to an overdrive, to fuzzy the more your turn up the volume control. The Pregain control acts more like a tone control, panning between 2 capacitors. The first transistor stage is kind of like an Electra Distortion, and then I don't quite understand the 2nd transistor, but it works and it sounds good.




12 comments:

  1. i suppose emitter of upper transistor should be connected to ground... am i right?

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    Replies
    1. I would have thought that too, but from what I can tell, it's not.

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  2. This producing tone-sound richer than Purple Plexi 800.
    And your PCB layout was perfectly good!
    This beauty grounding reduce noise very much!

    Thank's Bro

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  3. Volume 1 and volume 3 are changed no? That way the pot will work reversed. In fact I have built this one and at least for me it was reversed. Also, the pregain is really giving you more gain - not sure how or why. Maybe it is changing the input inpedance?
    In my version the pregain also works reversed. Did I make a mistake?

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    Replies
    1. Check out the General Layout Notes tab for the correct numbering of pot lugs.

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  4. Hi, thanks for this layout. Can I use a 2n5088?

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  5. My doesnt even sound like overdrive, more like tone coloring boost but its not boosting to much...

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