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, 2015

Marshall Guv'nor

The Marshall Guv'nor is one of the more highly regarded overdrive/distortion pedals of the late 80s, early 90s. With it's amp-like dynamics and a wide range of versatile tones, the Mk. I version of this pedal is still highly sought after. Many artists have used it, though Gary Moore is most associated with it, thanks to his "Still Got the Blues" album. 

You can use right angle PCB pots, mounted from the solder-side of the board if you like. It should fit nicely in a 1590B.


7 comments:

  1. verified sir, jus worng pot gain 3,, must 3 to 1.. heee

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  2. Thanks for the verify! I've updated the layout to swap the gain pot so it will work with right angle PCB pots.

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  3. i have one request sir, you can make layout wampler euphoria/ectasy sir. I send in tab *request a layout not work

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  4. see sample demo on https://www.youtube.com/watch?v=9_NwmkolDfo

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  5. I have two questions about this circuit. I built this and everything is working, but it seems to significantly cut the output volume. Is there any way of correcting this? Also, there is no significant increase in the gain until I turn the gain pot to about 3/4 and then from there to all the way up it increases to a medium high gain. Is that the way this circuit is supposed to work?

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    Replies
    1. Most of these older Marshall effects aren't all that loud. You might want to replace the Gain pot with a log taper 100k.

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    2. I'm having the exact same issues as you Rick (gain and output volume). We may have buggered something on the board. I have an original Guv'nor and it's output is far louder. I'll see if I can find out what it is.

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