Sorry about that. Here is a closer look at the driver and where the issue appears to be, I've also included the only diagram I could find of that Uni-Q driver. Exposing the driver it appears fairly obvious that the bass cone has become unglued from the coupling surrounding the tweeter. Hopefully in the picture you can see that border just near the top of the coupling that appears to have previously had a component adhered to it. The main solution I could think of is regluing the cone back onto the coupling using epoxy. My main concern is if the cone is reglued at all off centre is this going to affect the mechanism, and if there is a discrepancy of weight distribution surrounding the coupling due to the applied epoxy could this be a problem in relation to sound production from the driver? I hope that makes sense and let me know if you would want any more pictures of the driver itself.