Troubleshooting
How to Fix a Subwoofer in Your Car: Diagnose and Repair Step by Step
Most dead subwoofers are really a fuse, a ground or an amplifier in protect mode. Here is how to test each part and fix what is actually broken.
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Troubleshooting
Diagnose in order and you will usually stop at step two. These guides put the checks in the sequence that finds the fault fastest, rather than the sequence that replaces the most parts.
Troubleshooting
How to Stop Vibration From a Subwoofer in Your Car: 7 Proven Fixes
Most subwoofer rattles come from a handful of panels and parts. Here is how to find each one with a test tone and fix it for very little money.
Troubleshooting
Why Your Bass Disappears Above 50 mph
Road noise masks exactly the octave your subwoofer works hardest in. Two of the three fixes cost nothing.
Troubleshooting
How to Kill Alternator Whine for Good
It is a ground loop, not a cable problem. Four fixes, in the order that actually works.
Troubleshooting
Finding Rattles and Buzzes, Panel by Panel
A slow sweep tone and a helper will find in twenty minutes what months of casual listening will not.
Troubleshooting
Why Your System Pops When the Car Starts
A thump on ignition is a turn-on sequence problem, and it is doing your drivers no good at all.