Today I was driving and hit a pothole. It wasn't anything extreme but i think my sub may have taken it hard. Now there is a constant noise, a sort of whilstling, from the sub when I have the engine running. Also every time it turns on, the sub sucks all the way back and makes a loud thump. It seems to work fine in the ACC key position after the initial thump but i'm scared to run it while the engine is on because of that whistling. Any ideas? I'm worried that something in the sub has broken and the magnet isn't working properly
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