Has anyone built the RR800M as a Superlead instead of JCM800?

Discussion in 'Shock Brother's DIY Amps' started by m0b1liz3, Oct 26, 2021.

  1. m0b1liz3

    m0b1liz3 TDPRI Member

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    I have been more of a Fender but love classic rock and the other day I spent some time learning about the different Marshalls. I definitely prefer the Superlead (1959) over the JCM800 (2203). I think the 2 circuits are very similar except for how the gain stage is wired in the preamp. Has anyone built a superlead micro???
     
  2. Bitsleftover

    Bitsleftover Tele-Holic

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    I marshallised Robs bassman micro by doing the following-
    Switchable tube/SS rectifier.
    Full set of 4 inputs.
    12AX7 in V1
    Added a shared/split V1 cathode switch.
    470k/470pf treble peaker on the mixing resistors
    Added a JTM/JMP tone stack switch.
    Added a bypass cap on V2a (possibly a step too far)
    Sounds great in either JTM45 or JPM/SLP mode. Couldn’t be happier.
     
  3. dan40

    dan40 Friend of Leo's

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    No reason that it won't work just fine. The only change you need to make is how the two triodes of v1 are wired and the input jack wiring. The rest of the amp will be the same as the JCM 800 layout.
     
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