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SWR Basic Black Problems

Discussion in 'Amps and Cabs [BG]' started by kotym, Jun 5, 2004.

  1. kotym


    Nov 26, 2000
    So Cal
    When I fire up my amp and I play a note, there's a buzzing sound that for the life of me I cannot locate. I first thought it was the tweeter or something rattling in or on the speaker. But then, get this, after like a couple of minutes, it goes away. This amp would be perfect if it didn't have this initial buzzing sound when I turned it on.

    Any thoughts? Weird, I know . . .
  2. Finger Blister

    Finger Blister

    Jul 8, 2003
    when was the last time you changed the preamp tube?

    sounds like maybe the tube is going microphonic on you
    until it warms up.