Marshall Mode Four

Discussion in 'Marshall Amps' started by shredhell, Sep 21, 2019.

  1. shredhell

    shredhell New Member

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    I just picked up a used Mode Four head to replace an aging AVT 150 1x12 combo. The 6 way footswitch had several buttons that were non functional - Guess what? THE AVT 150 footswitch works perfectly for the mode four head!!!!!!! I couldnt find a replacement mode four footwitch to save my life, discovered this tonight at practice. Heads up to all Mode Four owners!!!!!
     
  2. ampmadscientist

    ampmadscientist Well-Known Member

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    Mode 4 Foot Switch is unbelievably over-priced.
    However mode 4 is a great metal amp. Probably one of the best. It sounds killer when it works.
    The built in effects are interesting / generic industrial.

    The problem with mode 4 is the pots/controls.
    These are cheap flimsy pots which wear out very fast, and cannot be cleaned easily. These are a "sealed" type pot w/ no access to internal cleaning..
    The knobs weigh too much, may be the cause of the very rapid pot wear.

    But there is 1 hope.
    You can drown (submerge) the pots w/ cleaner and spray cleaner down into the shaft, then rotate several times.
    The cleaner will soak in through the seams. The goal being to soak the inside of the pot with lubrication.
    You will feel the pot noticeably loosen, and it will become easy to turn.
    you will hear the audio clean up and stabilize... This is the sign that cleaner is penetrating.
    The type of cleaner would be Deoxit G100, D100, or LPS-1.
    Non-conductive lubricated cleaner.
     
    Last edited: Sep 21, 2019
  3. shredhell

    shredhell New Member

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    Thank you for the tip, I may try that soon. That does lead me to another question, as you seem pretty knowledgeable about this monster, I think I may have a bad tube, channels 1 and 2 have little to no horrible sounding volume, while the 3rd and 4th channels are brutal and true. They all sounded like that at first playing of the amp, i mean you could just barelyyyyy hear the 4th channel at FULL volume. I removed and reseated the tubes, which brought back the normal sound in 3 and 4.
     
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  4. ampmadscientist

    ampmadscientist Well-Known Member

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    You can spray cleaner into the sockets.
    the pins of the tubes can be cleaned w/ an eraser. [​IMG]
     
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  5. Trelwheen

    Trelwheen Well-Known Member

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    Nice score:cheers:

    I heard the Mode Four first on Jane's Addiction's Strays album...amazing

    This led me to look at them at my local music shop. Long story short, I ended up buying the matching MF400 4x12 cab instead. It's not that I didn't like the head, but the cab blew me away when I played a 2203 thru it. I've still got the cab, and I've thought about snagging a Mode Four head a few times since. They go for reasonable $$
     
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  6. Mitchell Pearrow

    Mitchell Pearrow Well-Known Member

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    Welcome to the forum new MF’r
     
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  7. ampmadscientist

    ampmadscientist Well-Known Member

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    Whoops
    welcome to the Marshall Amp Forum :cheers:.
     
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  8. shredhell

    shredhell New Member

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    Thanks Guys! Id love to find one of the MF Cabs- man those are beastly. Its running thru the AVT cab currently. About to throw some russian made EH 12AX7s in there from tube king, matched balanced and high gain of course. Those seem to have good reviews for replacement tubes in marshall heads from what Ive found.... its either those or the Gold pin JJ's... still deliberating
     
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  9. shredhell

    shredhell New Member

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    Im going to be replacing the stock EH 12ax7 tubes in my mode four, looking at either russian made EH, or JJ ecc83 - or JJ ec803s high performance gold pins, with above mentioned ammenities from Tube depot.. any metal players with any advice or recommendations?
     
  10. Trelwheen

    Trelwheen Well-Known Member

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    I like RFTs in the preamps of my Marshall heads. They're inexpensive and last a long, long time. Maybe give some of those a try..... If you want new production tubes, maybe try some made by Sovtek, who also make the EH tubes I think. (Mesa Boogie does a great job of culling these Sovteks, they rebrand them for use in their amps - buy from them. I like the SPAX7 a LOT.)
     
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  11. ampmadscientist

    ampmadscientist Well-Known Member

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    You will need some bad-ass speakers to handle 300 watts.
     
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