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, March 13, 2017

Catalinbread Dirty Little Secret Mk. III (ish)

I've gotten a few requests for the Mk. III and found several good stock layouts on FSB, so I thought I'd go with a slightly modified version of the DLS Mk. III. This has an added presence control, as well as an onboard charge pump. It's designed for use in a 125B with top mounted jacks, and the pots are all board mounted. Here's the schematic the layout is based on for reference.


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14 comments:

  1. alexmanMarch 13, 2017 at 11:31 AM

    cool! Good layout !!!

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  2. JuaniMarch 13, 2017 at 12:36 PM

    this pcb works?

    ReplyDelete
  3. guitarMarch 13, 2017 at 1:11 PM

    Hi, As I do to alternate between 9v and 18v ?
    And can use J201 ?
    Thanks

    ReplyDelete
    Replies
    1. Effects LayoutsMarch 13, 2017 at 1:19 PM

      I think J201s will be ok. Just be sure to use sockets.

      Are you asking about a switch to go between 9v and 18v? You'd use a SPDT switch with lug 1 going to the +9v pad on the layout, lug 2 going to the DC jack/battery, and lug 3 going to the trace that connects to the drain of Q5 (you'll have to get creative wiring that in as there's not a pad for that).

      Delete
    2. guitarMarch 13, 2017 at 8:16 PM

      Sorry buddy, I actually wanted to ask:

      What is the purpose of the MAX1044?
      I can use the power supply of 9v and 18v ?
      And how to make the control of Super Lead and Super Bass .

      Sorry my ignorance friend

      Delete
    3. plushMarch 14, 2017 at 7:47 AM

      Hi!

      The purpose of 1044/7660 is to raise supplied voltage from 9 to 18 volts and provide mOAr headroom for this circuit.

      You can omit chargepump if you already have 18v power supply.

      >And how to make the control of Super Lead and Super Bass .

      You'll have to tweak some values, add treble bleed cap to output vol and bunch of other stuff.
      I highly doubt you'll be able to make a compact and simple switch to jump from super lead to super bass, at least for this circuit.

      Delete
    4. guitarMarch 14, 2017 at 11:47 AM

      Thank you guy for clarifying my doubts =)

      Delete
  4. MednessAmpsApril 5, 2017 at 7:35 AM

    Bass and Mid pot are reversed.

    ReplyDelete
  5. Dennis KriggerMay 7, 2017 at 1:27 PM

    hi, there's a way to do the super bass/super lead switch on this board?

    ReplyDelete
  6. UnknownJune 7, 2017 at 9:31 PM


    Friend: Verified! Sounds perfect with the 2n5457. Thank you for your work!

    ReplyDelete
    Replies
    1. AnonymousMarch 20, 2018 at 3:22 AM

      Thanks for the information, and right now I'm going to buy the parts to make this pedal.. hahahah

      Delete
  7. ZZOYDJune 4, 2018 at 9:55 AM

    I have made it! I used soviet kp303a transistors & chip 7660.Thank you for your works!!!

    ReplyDelete
  8. UnknownDecember 20, 2020 at 6:01 AM

    Hi, I made the pcb but I have an issue with bass control. It works only in the first part of the pot course. I check pot type (A1M) and it's ok. What could be the problem?
    Thanks in advance

    ReplyDelete

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