Just a suggestion, you might try removing the woofer (I think that model has two woofers, so it would be the upper one), and then look up to the top inside, and see if there are any fasteners there for the mid/tweeter shell.
Just a guess, but that is what I would do. Hopefully, someone that's actually had one apart will chime in. Good luck!
Regards,
Dan
Just a guess, but that is what I would do. Hopefully, someone that's actually had one apart will chime in. Good luck!
Regards,
Dan