The JBL 2268 speaker has a neo magnet and the frame is aluminum which results in a very lightweight speaker.
It has two voicecoils for better damping, more power handling and less power compression which means its more accurate at higher power levels. As you can see in the video, this speaker dried out and blew apart, creating an imbalance that eventually made the voice coil fail.
The video shows how and why the speaker failed.
I got an aftermarket recone assembly from McKenzie.
The recone job went well and the speaker went back into service at The County Line club in Melbourne Florida.
My other site fix-any-thing also has posts about fixing speakers.
BTW if you see something interesting on those little ads, please check it out and then come on back.
Thanks for visiting, I hope I can help with your speaker problems.