68 Princeton Reverb amp buzz

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by murraythek, Jul 26, 2013.

  1. murraythek

    murraythek Member

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    Im getting a distinct and annoying buzz on a newly acquired 68 PR. It was something I was aware of during the sale, so it helped in the negotiating. The buzz is present once the volume gets over 4-5 and when hitting low notes. I have troubleshooted the following:

    - tubes replaced, still buzz
    - reverb tank removed, still buzz
    - baffle and speaker removed...no buzz!

    Nothing appears to be wrong with the speaker, but its vibrations are causing that buzz once screwed to the cabinet and baffle.

    Thoughts?
     
  2. Kyle B

    Kyle B Supporting Member

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    Try pushing on the edge of the speaker, see if you can find the magic spot that makes the buzz go away. It might be simple as a little crazy glue on the speaker surround.
     
  3. murraythek

    murraythek Member

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    I dont think its the speaker. I have the speaker still attached to the baffle and the buzz is gone when removed from the cab. The buzz returns once reattached to the cab.
     
  4. ekp

    ekp Member

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    Your problem may be mechanical, such as a loose handle or the baffle is not seating all of the way around. Or, the amp is not fastened to the cab. The worst possibility is a cab that is becoming unglued.

    Have a great day, Eric
     
  5. smolder

    smolder Gold Supporting Member

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    You're gonna need another baffle or speaker to figure it out for sure. If you were near me, I cold help you out.

    Adult guitar players need spare speakers laying around... just like adult home owners need extra lumber laying around (for no particular reason ; )
     

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