Conversion 4xEL84 to 2xEL34

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Scott_F, Nov 27, 2005.

  1. Scott_F

    Scott_F Member

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    Any general rules of thumb going from a cathode biased matchless type layout 4xEL84 and converting to a 2xEL34?

    Thaks.
     
  2. VintageJon

    VintageJon Member

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    Well, this will be a money-hole for sure.

    1: EL84 is 9-pin and EL34 is Octal based.

    1A: You'll have to punch chassis...

    2: Would have to look-up and figure plate impedance for both examples, but I'd be surprised if it matched.

    What's wrong with 4 X EL84 ???

    -Jon
     
  3. Rich M

    Rich M Member

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    What have you got? I've been looking for a 4 x EL84 amp. Got lots of 2 x EL34/6L6 amps to trade.

    -Rich
     
  4. Blue Strat

    Blue Strat Member

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    Unless this amp has virtually no value, I think you're wasting your time.
     
  5. VintageJon

    VintageJon Member

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    What Mike said... (Howdy, Mike!)

    -Jon
     
  6. doctord02

    doctord02 Member

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    +100

    also EL34's have pretty stout current demands. A power transformer intended for 4 EL84's may not be able to deliver the amperage needed.
     

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