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.

Tuesday, April 7, 2020

Marshall Guv'nor

Here's another layout that needed a refresh/correction. Old layout was pretty trash and had a few errors which have all be resolved. Similar to the Blues Breaker (at least in circuit topography), but with a 3-band EQ and hard clipping. Bit more gain and distortion on tap. Here's the schematic for reference. Should fit nicely in a 1590B.


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21 comments:

  1. Taciano CanassaApril 7, 2020 at 1:25 PM

    Thanks man! This pedal is awsome! If you want to hear it in it's finest just list to Gary Moore's Still Got The Blues album. It was entirely recorded with one of these!

    ReplyDelete
  2. BucksearsApril 8, 2020 at 5:32 PM

    Just wanted to say thanks as well. I've built the Guv a few times over the years, but this is nice and compact.
    Glad things got sorted out correctly; I went over the layout several times yesterday and today, comparing it with the factory schematic of the Marshall Guv'nor from the late 80's. This looks good to go and will be putting it my build queue.

    ReplyDelete
  3. DoctaireApril 11, 2020 at 1:55 PM

    This turned out great! I have a late 80’s version and can confirm.
    Call it verified

    Stay safe and healthy!

    ReplyDelete
  4. ZZOYDApril 15, 2020 at 1:36 PM

    verified! Made + mode with mosfet clipping! Thanks, David!

    ReplyDelete
  5. dan BentivoglioApril 30, 2020 at 8:02 AM

    sorry for my language, but I'm from Brazil. what happens if i exchange TL072 for tl833

    ReplyDelete
    Replies
    1. Effects LayoutsApril 30, 2020 at 11:34 AM

      The 833 is a hi-fi chip, so it may sound a little clearer and defined. Everything I've built with an 833 chip has sounded great, so I think you'll like the results.

      Delete
  6. HarisFebruary 7, 2021 at 10:13 AM

    Saya putus asa buat efek kok gagal terus.gak bakat

    ReplyDelete
    Replies
    1. EKA SATRIA BAHARIJuly 3, 2022 at 10:13 PM

      buat yg simpel dlu bro, MXR distortion plus contohnya

      Delete
  7. HarisFebruary 7, 2021 at 10:16 AM

    I'm indonesia.can you tell me that layout
    is work?
    Thanks

    ReplyDelete
  8. UnknownMarch 4, 2021 at 10:25 AM

    hi
    i made this layout today and it's awesome!!!
    but when i turn the gain knob it gets really noisy
    what seems to be the problem?

    ReplyDelete
  9. CrispyFunkApril 11, 2021 at 6:55 PM

    i built this on a bread board today , this sounds absolutely awesome.

    ReplyDelete
  10. PampaApril 14, 2021 at 4:23 PM

    HI! Can i use it like preamp for a portable amp?

    ReplyDelete
  11. PlatendraaiertSeptember 11, 2021 at 1:44 PM

    The correct treble pot is 10KB in the original 80's pedal

    ReplyDelete
  12. EKA SATRIA BAHARIJuly 5, 2022 at 10:28 PM

    i have problem with this build, at first arround 10 minutes it went normal and great sound
    but suddenly the distortion became so noisy and sound gone, i had no led light when string strummed
    i changed the component for 1k5 become 1k2, 2m2 become 2m and 100pf for 50pf paralled
    is there any solution?

    ReplyDelete
    Replies
    1. EKA SATRIA BAHARIJuly 6, 2022 at 10:17 PM

      solved, 10nf cap near input jack shorted and has dc leaked
      removed and install new 10nf cap
      thing works fine
      great sound anyway

      Delete
    2. EKA SATRIA BAHARIAugust 6, 2022 at 6:26 AM

      I still have this issue, can someone give me solution??

      Delete
  13. scorchers1003July 29, 2022 at 12:33 AM

    Between the 5817 and 680k at the two ends going over the blue lines to the red is a wire which I assume is soldered is this correct.

    ReplyDelete
    Replies
    1. Effects LayoutsJuly 29, 2022 at 9:55 AM

      Yes, that's a jumper. Just use a bit of hookup wire or a cut off lead from a resistor or capacitor.

      Delete
  14. Kev GonzalesOctober 13, 2022 at 9:19 PM

    Hello, I have built this and it works quite well. I want to ask if it should be placed after a cab simulator or before it like an amp sim? Or is this like any other conventional distortion pedal that should be placed before a cab sim? Thank you for this layout btw. This is a blessing.

    ReplyDelete

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