mag 300 noise

Discussion in 'Amps and Cabs [BG]' started by rdcalab, Aug 18, 2005.

  1. rdcalab


    Jan 10, 2005
    San Diego
    when i first turn my mag 300 on, it makes a loud fast paced thumping noise. After about 4 or 5 seconds a loud pop and everything is fine. I have tried everything : no gain, no vol, both halfway. Any ideas out there as to what this could be?? :meh:

    this is plugged into a 15" 8 ohm cab.