Pro Junior: reducing hiss

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Griz, Jan 5, 2008.

  1. Griz

    Griz Member

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    Greetings, all. My '93 PJ sounds lovely. No biggie, just wondering if there are any cost effective ways to reduce hiss (or is that just the price you pay for a fairly hot sound out of a simple circuit?).

    Thanks in advance, gurus.
     
  2. Scottone

    Scottone Supporting Member

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    You can put a 12AY7 in the first position. The hiss will be reduced, but the sound will also be cleaner.
     
  3. soldersucker

    soldersucker Member

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    1.The screw in the upper middle of the back panel,back it out
    2. lower gain peramp tubes 12at7 works for me
    3.never seen one dead quiet but they sound damm good don't they.
     
  4. Griz

    Griz Member

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    They surely do.

    Right now I'm running mine through a Marshall 1965B cab, with the tone control full up to compensate for the cab's low-mid boominess. Sounds fabulous.

    I'll probably try the 12AY7 suggestion from scottone first; that made a huge improvement to a Bassman reissue I once had. If too much hiss persists I'll definitely check into the 12AT7. Thanks for the advice.

    Afterthought: could the phase inverter tube be the culprit?
     
  5. benjisaynomore

    benjisaynomore Member

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