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Early-mid 70s marshall jmp mkII 50w

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  • Early-mid 70s marshall jmp mkII 50w

    Need some help with this one, it's a 4 input 50 watt non master head. It's been mucked with before i got it and so I'm restoring it to original. Anyone know where i can find a schematic and or component layout layout for this amp. Found some that are close but not exactly this amp. Thanks in advance.

  • #2
    Look at the top of the page, in the bar that says FORMS BLOGS ARTICLES...

    Click on the one : Schematic Hell, and look through the MArshalls there.
    Education is what you're left with after you have forgotten what you have learned.

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    • #3
      Could it be this one perhaps?
      Attached Files
      Support for Fender, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk

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      • #4
        Try again ... jmp_pa_50w_1963.pdf
        Attached Files
        Support for Fender, Marshall, Mesa, VOX and many more. https://jonsnell.co.uk

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        • #5
          Is it this one: https://drtube.com/schematics/marshall/1987mk2u.gif
          If not, what is different (other than things that may have been 'mucked' with)
          "Everything is better with a tube. I have a customer with an all-tube pacemaker. His heartbeat is steady, reassuring and dependable, not like a modern heartbeat. And if it goes wrong he can fix it himself. You can't do that with SMD." - Mick Bailey

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