Dissipation Calculation question. For 6L6's

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Red Planet, Jan 11, 2006.

  1. Red Planet

    Red Planet Member

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    Why is it that some folks list 6L6's at 23 watts and some list them at 30 watts.

    Whats up wid dat?
     
  2. bob-i

    bob-i Member

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    Most 6L6's are 30 watts. Some of the 5881's and low end 6L6's were 23 watts, but that's not the norm. I always bias AB 6L6's at 70% of 30 watts, 5881's at 70% of 23 watts.
     
  3. Red Planet

    Red Planet Member

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  4. Blue Strat

    Blue Strat Member

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    There are several variations of "6L6" tubes, each with a different suffix. To say "6L6" doesn't give enough information, a suffix must be used.

    6L6GCs are rated for 30 watts, 6L6WGBs and 5881s are rated for 23 watts, etc.

    Russian 5881s (aka 6L6WGC) do not adhere to the original (and CORRECT) spec for 5881s. They're neither 5881s nor 6L6GCs, just kinda similar to each.
     
  5. Red Planet

    Red Planet Member

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    I see said the blind man.

    So I've got

    NOS Sylvania 6L6GC's 30 watts

    NOS GE 6L6GC's 30 watts

    Mesa Boogie STR430 6L6GC's 30 watts?

    JJ 6L6GC's 30 watts?

    Are the Modern Designation of these additional letters being used correctly? In other words are the JJ's and MB's I have really GC's?
     
  6. Blue Strat

    Blue Strat Member

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    Excellent question! I know that many of the modern tubes DO NOT adhere to the original specs. Myles Rose can probably answer which ones do and don't.
     

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