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Wednesday, October 30, 2024

Marshall Shredmaster

 Here's another old layout redone for all you Jonny Greenwood fans. I think the old layout was based on an old and incorrect schematic (here's the schematic used for this layout), but this one should be right and a much easier fit in an enclosure than the old one. 




8 comments:

  1. Agreed, glad to see this updated. I'll compare it to the original layout when I have some time.
    FYI - for those who feel it's too dark, that 1n cap in the lower right is a good place to start. That's where the 'Blunt/Sharp' switch is on the Hyde side of the Visual Sound Jekyll & Hyde. It toggles between the stock 1n cap (Blunt) and a 100pF (Sharp). I'd recommend something in-between (470pF, maybe) as I think the Sharp mode is too bright.

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  2. THANKS MAN!!! mod high gain, replace 680k to 1M5

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  3. I found what I believe to be the factory schematic here:
    https://github.com/yuvadm/guitar-effects-schematics/blob/master/Distortion%20Boost%20and%20Overdrive/Marshall%20Shredmaster.pdf
    Only items that appear to be a little off are the 4.1K and 40K resistors, which I have visually confirmed to be 4.7Ks and 47Ks in the SM gutshots. Everything else on this schem matches up with the gutshot parts layout/copper tracing.

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  4. Verified, built the perfboard layout yesterday and works perfectly.

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  5. Hello from Japan.
    I checked this layout. It seems that C15(200nF), R13(100k) is missing in layout.

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    Replies
    1. Thanks for catching that. Those components have been added and the layout updated. It eliminated the need for one of the jumpers.

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    2. Thanks for updating the layout!

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