Creative A520 subwoofer problems

Hi guys, I have a Problem, I bought a Creative A520 a while ago, And It was woeking fine. And then all of a sudden, Sub woofer makes a noise that sounds like a Plastic bottle Crunching up; So I turn bass down and it seemed alright. And then it started being Intermittent, and randomly working while I listen to music (The bass is turned right down)

Techy Details :

Laptop I use is a Lenovo R61 with Linux running on it.
 
Either the speaker or the amp inside the box is probably broken or breaking. I'd check the surround and see if it's cracked or separated from the cone.
 
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