How to fix this issue?

[Hunter079]

The Subwoofer is a polk dxi 124 dvc connected to an RE audio 2000.1 amp in a 1991 Honda Civic LX model. The amp's rms at 4 ohm is stated to be 410W and the subs rms is stated to be 360W (180 per coil). The gain on the amp is set to about 1/3 and the bass level on the amp is set to about 6db (setting goes from 0-18). The sub is also in the stock ported box.

It's difficult to see in the video, but whenever it makes that bad sound, it almost looks like it is holding the cone in rather than letting it go out (if that makes sense). Also, whenever that happens the blue LED on the remote flickers a lot so I'm wondering if it's a power issue/ground issue since this also happened on a Polk dxi 112 before i got it replaced with the dvc version through its warranty.

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[Mitch86 5,000+ posts]

Turn the bass boost on the amp OFF. If this is happening on 2 different woofers, def sounds like the problem is somewhere else.

 

[big scott]

sounds like coil rub.

 

[Hunter079]

Turn the bass boost on the amp OFF. If this is happening on 2 different woofers, def sounds like the problem is somewhere else.

On my amp its like a bass level. If I set it all the way down to 0, very little actually plays.

 

[Mitch86 5,000+ posts]

On my amp its like a bass level. If I set it all the way down to 0, very little actually plays.

Search for "gain setting tutorial" and set your gain properly. Bass boost will kill your sub if you're not careful and is not needed.

 

[Hunter079]

Okay. It may have been a ground issue since I noticed that when it was installed, they did not sand down the paint. After doing so, that weird distortion only happened at volumes higher than I would listen to in the car (and with the car off), so as of right now, I believe it is fixed. The sub also seemed to move a little more freely than it did before re-wiring the ground.