Crack in Type-R Alpine

Alpine SWR-12D4 Subwoofer
Bought a 1000w type r for $110 but it has a 2 inch hair line Crack on the cone.
Good thing is, it doesn't go through.
I have (on hand):
E6000 adhesive
Lepage plastic adhesive
Bondo
Gorilla glue
Do I need to worry about playing it and it getting bigger?

Just unsure how to fix this thing guys?
T.I.A.