Subwoofer rattling - Paradigm Audio Players & Recorders

disconnect the amp and do a "pop" test with a 9v battery, it should be clear and no rattle... if it rattles sub is blown

Yes You Can. But its not recommended on subwoofers or any larger speaker that moves a lot. The only way this will work is if you can see the foam rattling and its not a huge rip.

Make sure your sub is securely screwed to your box, boot build, whatever you have it sitting in. Remember subs are made to vibrate when working, check your screws are tight.

Have you had it checked out, if it rattles when bass hits hard, it could be busted, have you had it up extremely loud before? If so, that is probably what done it, otherwise, I would call whoever you bought it from, and ask them if they know anyone who has had similar problems to yours.

Hiya by rattling i am assuming like something loose/fell off etc (rattling sound or distortion on the speaker itself is different, speaker could be damaged or braiding damaged that 'Might" make the speaker come in and out.) Something could have come of the PC board and may not be to serious. Probably protecting as not 100%. It may be as simple as resoldering the part but if not sure on your side i would advise seeking some help. Best of luck

Try filling the inside of the enclosure with insulation [roof insulation will work ] or a small pillow just to see if its the box or the driver rattling if its the driver you might have to secure it to the enclosure with screws or something ,

check the coils sound like they are burned up or blown

firt you clean the subwoofer with cleaner after that, check the subwoofer srrounding, no electrical wire ,mobile phone & electrical operated items is near ur subwoofer.
1. Do not use maximum volume of subwoofer.
2. Use only 65-85% volume of your sub woofer.

Most likely the speaker's center dust cap came loose (this is common on Audis, and maybe on M-B cars too). Just use a little glue and glue it back on and the rattle stops.

the voice coil is blown.