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Marshall 6550 to EL34

Discussion in 'Amp Central Station' started by Marky D., Mar 19, 2003.

  1. Marky D.

    Marky D. Tele-Holic

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    Mar 19, 2003
    Location:
    Minneapolis, MN
    I've seen several descriptions of this modification, all calling for the switching of the negative feedback wire from the 4 ohm to the 8 ohm tap on the OT. What does this achieve?

    Thanks! 8)
     
  2. Tim Swartz

    Tim Swartz Friend of Leo's

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    Mar 18, 2003
    Location:
    Michigan - Tweenst the Great Lakes
    It affects the range of the presence control.
     
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