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, July 18, 2016

JangleBox

Here's a cool variation on the MXR DynaComp. Apparently it's well loved by Rickenbacker players for adding even more Byrd-like jangle to their tone. It's laid out for board mounted pots and you should be able to squeeze it into a 1590B.


11 comments:

  1. Hey, can I request a layout via donation button on the bottom left?

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  2. Hi , can I request a Multiplex Echo Machine from 1776effects?

    Thanks a lot!

    http://1776effects.com/wp-content/uploads/2015/03/Multiplex-Build-Doc-1.7.pdf

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  3. I presume the CA3080 ic works fine in this?

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  4. I'm getting a strange oscillating fuzz sound. Theres no sound at all until I hit the strings hard and the suddenly it will come on with fuzz sound that continues steady on the decay but cuts in and out as the signal dies. Is this bad envelope ripple.

    I've measured the transistors.
    Q1
    C: 8.82
    B: 1.14
    E: 1.28

    Q2
    C: 8.73
    B: 0.08
    E: 0

    Q3
    C: 4.4
    B: 0.53
    E: 0

    Q4
    C: 4.4
    B: 0.08
    E: 0

    Q5
    C: 8.83
    B: 4.4
    E: 8.2

    IC
    1: 0
    2: 2.2
    3: 2.2
    4: 0
    5: 3.6
    6: 0.08
    7: 8.82
    8: 0

    I've checked polarity on all the capacitors and triple checked the transistor orientation.

    Any ideas?

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    Replies
    1. Have you tried going through it with an audio probe?

      Delete
  5. I think the pins 2 and 3 are reversed in the one schematic I saw for the Jangle box. I compared it against the ross any dynacomp. I am going to try to swap them on the board to find out.

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  6. I had a problem with low output. Couldn't figure out why. Compared Ross and Dyna schems and thought the pinout might have been issue. It was not. I put it back the way it was. Then doing some checkin on DIYstompbox forum, reading using 2n5088 in the Rodd and since I built the Ross and it worked great, I swapped out the 2n5089s with 2n5088s. Bingo! Got the gain that was missing. The layout is good. Another great job!

    ReplyDelete