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Fender tweed in Marshall chassis

Discussion in 'Shock Brother's DIY Amps' started by MojoTrwall, Feb 17, 2021.

  1. MojoTrwall

    MojoTrwall Tele-Holic

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    Hello,

    After doing every pedal I had in mind and modding my classic 30 and doing extensive research via robrobinette site I want to dig in the diy hole and build my own amp.

    I'd love a tweed amp extensively modded, and I'm not found of the upper panel tweed style due to hardest access to the lower panel.

    Does anyone successfully put a tweed in a Marshall chassis ?

    Is there a place to plan a custom chassis drill, I'm not found of this part of the job usually.
     
  2. jsnwhite619

    jsnwhite619 Friend of Leo's

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    Is there a particular Tweed you have in mind? May help in suggesting chassis alternatives knowing the size, tubes, knobs needed.
     
  3. MojoTrwall

    MojoTrwall Tele-Holic

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    5f6a.

    I immediatly thought of a jtm 45 chassis, but I'm afraid the dog house cap won't fit due to the tube sockets.

    (Short answer would tell build a Jtm45, but I'd like a bassman).
     
  4. gigante

    gigante Tele-Meister

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    I can't read today. Nothing to see here.
     
    Last edited: Feb 17, 2021
  5. jsnwhite619

    jsnwhite619 Friend of Leo's

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    Go for it! You're 90%+ of the way there from the beginning either way!
    https://robrobinette.com/5F6A_Modifications.htm#Marshall_JTM45
     
  6. MojoTrwall

    MojoTrwall Tele-Holic

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  7. Lowerleftcoast

    Lowerleftcoast Friend of Leo's

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    A Marshall 18Watt is a lot like a 5E3.
     
  8. tubeToaster

    tubeToaster Tele-Meister

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    Look at the Weber JTM45 chassis kit. They use a fiberboard fastened to the power transformer mounts to hold the filter caps.
     
  9. tubeToaster

    tubeToaster Tele-Meister

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    upload_2021-2-17_18-6-12.jpeg
     
  10. tubeToaster

    tubeToaster Tele-Meister

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  11. Viejo

    Viejo Tele-Afflicted Silver Supporter

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    A Marshall JTM 45 is a Fender Tweed Bassman in a Marshall Chassis
     
  12. Outlaws

    Outlaws Tele-Meister

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    I cannot believe there is any appreciable sound difference between a JTM45 with 6L6s and a 12AY7 in V1 from the original 5F6. (And maybe match the negative feedback resistor for feel)

    Speakers are IMO easily over 50-75% of any amps sound from my swapping of heads and cabs.

    So my vote is build a JTM45 and get American voiced speakers to make it a tweed.

    I built a hybrid Bassman/JTM45/JTM50. With greenbacks and 12ax7 it’s all Marshall, with Weber/Jensen Alnico and AY7 it’s all tweed Fender. I added a NFB selector and there is a real change between the bassman and jtm settings, but it’s just in touch dynamics, not sound.
     
    Last edited: Feb 17, 2021
  13. MojoTrwall

    MojoTrwall Tele-Holic

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    Good to hear !
     
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