Does anyone use a variac with their Marshall nvm amp ?

Discussion in 'Marshall Amps' started by Ufoscorpion, Dec 20, 2020.

  1. matttornado

    matttornado Well-Known Member

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    I always thought the variac is what gave Eddie his brown sound. No amp mods or some secret OD pedal people swear he must have used, especially on VH 1.
     
  2. JP2036

    JP2036 Well-Known Member

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    [​IMG]
     
  3. solarburnDSL50

    solarburnDSL50 Well-Known Member Platinum Supporting Member

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    Yep. After his pedal choices and guitar build it sure as Fuck did.

    I've noticed players that use a variac don't rebias especially after lowering voltage as much as Ed did. Nothing secret easily reproducible. Tubes will burn quicker though. Ed didn't give a shit.

    There will always be some other version that says it close but not quite. They be wrong. Not that out of bounds. Nothing's perfect.
     
    Last edited: Dec 24, 2020
  4. JKSL

    JKSL New Member

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    I run everything with the AmpRX Brownbox - old Marshalls, Voxes, Fenders - and it makes for a significant improvement in feel and tone. The 50 and 100w Marshalls seem to like it around 114v (with bias unchanged from before) while the 1974x, the small Fenders and all of the Voxes are most happy at 110v. I haven't rebiased the Marshalls yet but next time I retube them I'll experiment with my tech in setting the bias while at lower voltages to see what we come up with. I plug the Brownbox into a Furman P1800PFR power conditioner which quiets line noise and brings some clarity to the sound.
     
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  5. solarburnDSL50

    solarburnDSL50 Well-Known Member Platinum Supporting Member

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    I'm running my cathode biased SC at 115V instead of 120V. Don't know how much range the bias resistor has so I stay conservative.

    Even at 5V's less I feel the diff in play. I can imagine lower volts feeling enuff to be there.
     
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  6. solarburnDSL50

    solarburnDSL50 Well-Known Member Platinum Supporting Member

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    Hang with this guy while he gets some things.

     
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  7. What?

    What? Well-Known Member

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  8. junk notes

    junk notes Well-Known Member

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    88v for Soldano..


    but for EVH his sweetspot for #12301 = 89v. (From a 60-100 volts variable.)
     
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