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Funny Speaker noise... help?

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by elkym, Feb 20, 2009.

  1. elkym

    elkym Member

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    I had a guy mod my Peavey a little while ago... he set the cathode bias a little hotter...

    Seems like it's louder now-- that doesn't bother me...

    But now when I hit about 7 or 8 on my volume knob... I get fizzy/fuzzy/spitty sounds from my speaker... is this 'cone cry'?
     
    Last edited: Feb 20, 2009
  2. rockon1

    rockon1 Member

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    Hard to say.The easiest way to find out if its a speaker issue would be to hook up the amp to another cab. Bob
     
  3. elkym

    elkym Member

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    hmmm... that's problematic-- I have no other cabs...
     
  4. elkym

    elkym Member

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  5. phsyconoodler

    phsyconoodler Member

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    Peavey what?I don't know of any cathode biased Peavey amps.
    Most cathode biased amps are already plenty hot,and making that relationship even hotter is a recipe for disaster.
     
  6. rockon1

    rockon1 Member

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    Only one I can think of off the top of my head is the Classic 20. Maybe he just meant biased it(fixed bias) hotter? Bob
     
    Last edited: Feb 21, 2009
  7. phsyconoodler

    phsyconoodler Member

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    Your clue is here:"I had a guy mod my Peavey a little while ago... he set the cathode bias a little hotter..."
     
  8. elkym

    elkym Member

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    It's Peavey ValveKing. Sorry about that lack of clarity.
     
  9. rockon1

    rockon1 Member

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    Thats a fixed bias amp. Perhaps he changed the bias resistor to run the tubes hotter. Bring it to a music store and plug it into another cab if you dont know anybody with a cab to try. Bob
     
  10. rockon1

    rockon1 Member

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    If thats what in fact he told the OP ,yes indeed. Bob
     

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