Pierson Amp - muffled/foggy...different tubes?

Discussion in 'Amps and Cabs' started by Bill_El, Jan 29, 2012.

  1. Bill_El

    Bill_El Member

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    I've got a Pierson 5F1 Champ with a Weber Vintage AlNiCo speaker.

    I find the sound is quite muffled or foggy almost unusually so. I can try some drastic eq to fix it, not the best solution, it's been suggested that I might try some different tubes. Any thoughts?


    Thanks for any input.
     
  2. Bill_El

    Bill_El Member

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    Tube types if that helps:

    Output: 6V6GT
    Preamp: 12AX7
    Rectifier: 5Y3GT

    I could pull them and check the brands as well.
     
  3. Blue Strat

    Blue Strat Member

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    How old are the tubes?
     
  4. TheAmpFactory

    TheAmpFactory Member

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    is this a new amp to you? or has it recently started doing this?
    I had a very simualr problem with a H&K amp of mine, tubes were Ok. but just the bias had slipped a bit, took it to a tech, and all was well again. - Might be that?
     
  5. Bill_El

    Bill_El Member

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    It's sounded this way since day one for me but the amp is 3 years old so I think the tubes are also roughly 3 years old.

    Maybe I'll have to take it in.
     
  6. How

    How Supporting Member

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    Have you contacted Pierson?
     
  7. Bill_El

    Bill_El Member

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    Just heard back, he thought to try different tubes as well.

    He suggested the 12AX7 first and then the 6V6, I guess they would have the most impact on the sound.
     
  8. TDJMB

    TDJMB Gold Supporting Member

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    If you have access to an amp tech you trust, why guess? Get the amp - and speaker - checked out. Especially if it's been like this since day one.
     

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