Go to craft store and pick up,
Black tissue paper like they use to stuff gift bags
Elmers glue
1/2 inch paint brush
Remove the driver,
Place the speaker cone tear back in position the best you can,
Cut 10 pieces of the tissue paper about an inch bigger then the tear,
Dilute the glue in a bowl with plain water to soup consistency,
Brush the glue around the tear and place a piece of tissue on the wet spot and wet brush the tissue,
Do the same on the other side of the speaker,
Allow about 20 minutes for dry time between the layers,
Brush glue on five layers a side.
Allow 24 hours dry time before using the speaker.
Done