Mission 70ds rattling..

[Phayze]

One of my Mission 70ds' has started rattling a bit whenever there's a lot of sound coming out of it, is this normally a symptom of me putting too much through it, or does that sound like something's come loose? SONY 940 powering it, with Mission 702's, a B&W center, and a crappy SONY sub. It looks like this btw. :D

http://www.project14.co.uk/images/lucs_cinema.jpg

[BobP]

I had rattling coming from my sub, turned out that the centre piece of the main cone (diaphragm?) had come loose and was vibrating the more bass you put through it - easily fixed with contact adhesive, Can you get the front grille or cover off the speaker and check the cone is still in one piece?