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.

Saturday, January 17, 2015

Zvex Box of Rock

This layout is for the distortion side of the Box of Rock. The Boost side is just a SHO. I've laid this effect out for top mounted pots like in my other Zvex layouts and should fit vertically in a 1590B. Pots are 1.1 inches (28mm) apart.

Board dimensions: 3.2 x 1 in. or 81.3 x 25.4 mm

9 comments:

  1. Can anyone confirm if this layout works?
    I've build it, but so far I have not gotten it to work

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    Replies
    1. Someone has built it successfully, so it should work. Have you taken an audio probe to it?

      http://www.diystompboxes.com/pedals/debug.html

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  2. Verified (again :-) )
    The most dynamic and clean distortion I've ever built.
    Thanks!

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  3. An observation. In some schemes I have seen that the 56nf capacitor is 1uf.
    What is the reason for this difference?
    Thank you

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    Replies
    1. It's a coupling cap: not a big deal.
      I guess the difference between them aren't too much noticiable.
      Maybe less muddy/a bit more bright with the 56nf?

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  4. Hi, how do you think, increasing the value of both 2nf capacitors right before the output will increase the low frequency in this pedal? I want to make a bass version, I'm about to increase the value for the input cap to 220 or 470nf, the 56nf cap to 1uf or 2.2uf, I also increased all 22nf caps to 33nf, and now I'm wondering if increasing the value for that two 2nf caps will make a positive difference because I don't really understand their role. Thank you so much!

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    Replies
    1. Those 2nF caps are to bleed some treble off the output. It may work fine without modifying those cap values, but if you find you've got too much treble, increase the value of those two.

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