clear nail polish. oddly, that acrylic stuff does wonders to seal surround tears. I have a small tear in one of my 12" Cerwins that happened in 1991, and the nail polish is still holding just fine. The sub has survived countless competitions like that, and never made a bit of difference to the performance.
Clear nail polish is the best solution for this. Actually if you put clear nail polish on your subs before you install them it protects the subs from tearing. If you really need to hold it in place use a mix of super glue and wood glue.
i have a JL 15w3 and the surround is completely gone on it, any ideas as how to go about fixing it or is it done for? I'm not really that worried about it seeing as i have two Kove Audio Aramageddon KXP-15s