Question about Kicker CVR12 Car Subwoofer

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When no music is on the subwoofer makes low rumble sound

When no music is on the subwoofer makes low rumbling sound and doesnt make bass like use to

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It's passing "engine noise" at 80hz and below. If you turn off the crossover on the amp, it will be unbelieveably loud. Check your RCA connections at the deck and at the amp. Then make sure your ground wire to the amp is solid and not oxidized. Check your battery terminal as well. Make sure your ground wire is the same gague as the power, and that it's grounded to the floor, not a seat bolt or side panel, as they are very poor grounds. Hope this helps. If you still have an issue, post a comment and I can help some more.

Posted on Jul 01, 2009

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Posted on Jan 02, 2017

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That rumble could be several things, start by switching your patch cables to see if there is a fault in the sine. If not it could be the amplifier trying to pull a constant source of current through it to operate and is being corrupted by a fault in the circuitry, or a feed back look of some sort. Either way, if you can't find a problem with your input signal, your sub will need repair or replacement. I hope this helps...

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