20 Most Recent
JBL PB12 Subwoofer Questions & Answers
I blew the circuit board on my jbl pb12 subwoofer.
Sorry to hear that. The JBL PB12 are notorious for their amplifier module giving out. This item is not repairable nor is there a replacement (The module is potted into an aluminum heat sink). Actually, I need to clarify, as the late models used discrete components. If this is the case, either Repair it yourself (Google search PB12 Repairs) or take it to the local repair shop. (Or to a technical college with an electronics program, they may work on it!)
The best method is looking for a plate amp to replace the PB12 Amplifier - try the bash 300W. Several people have done this conversion. Be warned, you will need to do woodworking if you want to mount the plate amp on the box!
12/27/2012 3:53:50 AM •
JBL PB12...
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Answered
on Dec 27, 2012
Subs hum when i turn of my stereo
When it only hums when you turn On the stereo, check the cable and connections .When it hums, even without anything connected to it, then it needs repair
10/23/2012 10:11:57 AM •
JBL PB12...
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Answered
on Oct 23, 2012
Sub is blowing fuse
Isolate the power transformer from the circuit board, just to determineif it is from transformer or from circuits on the board.
10/23/2012 10:09:30 AM •
JBL PB12...
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Answered
on Oct 23, 2012
JBL PB12 will have loud thump or pop!
First try to find the source of your problem. The easiest way would be to try your sub with a different audio source to see if the problem still occurs but is sounds more like there's a problem with the receiver.
10/22/2012 10:09:56 PM •
JBL PB12...
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Answered
on Oct 22, 2012
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