...PB 12 sub and have a problem, when it turns on automatically it produces a humming sound, just in the instant the leds go from red to green, then it runs fine with no audio distortions. I know it has ...
...PB 12's with an "M" as part of the ser. no. were assembled in Mexico and these are the ones with the amp problems. JBL fixed mine and sent it back no charge, BUT it cost me nearly $100 to send it to ...
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