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400RB-III started popping when turning on and off

Discussion in 'Amps and Cabs [BG]' started by RSalvador, Oct 22, 2010.

  1. RSalvador

    RSalvador Lakland 44-94 - Markbass LMT 800 - Schroeder 1212L

    Nov 19, 2005
    Springfield, MO
    I bought this used and I've used it for a couple of years with no problems. Last few gigs I noticed a pop through the speaker when powering on and off.

    Time to go to the amp tech right?


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