Question about Alpine SWS-1042D 10" Subwoofer Car Speaker

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My stereo shop said my Alpine SWS 1042D 10'' sub was good, I hooked it up to a new Kendwood CD player and a Rockford Fosgate mono amp. and put it into a professional box with a tiny bit of stuffing and no port. It sounded great till I cranked a rock song. Didnt hear anything real bad, but now-after a few minutes of warmup, it starts rattling when given more bass. I checked the ohms-right at 2, and cone is tight with no rattling etc when I push in on it. Again, it works well until after a few minutes warmup-then rattles like a loose license plate, but it's from the speaker-definitely. Help?

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Could be the magnet loose or the voice coil bottoming out. if so, too much power. Check those and respond back.

Posted on Jun 14, 2010

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