Noise from my emerald physics 4.2

Whenever I grab the top of my Emerald physics 4.2 loudspeaker and give it a little shake it sounds like there is a bunch of rocks or rubber ball bearings shaking around inside of a Topps mid-range Tweeter assembly now this does it on both speakers and yes I called the owner and he doesn't have a clue and he acts like he doesn't care does anybody have any idea what this could be, and these speakers are brand new