I have used Goop with success in dB Drag before. If you have a ripped surround or maybe a small hole it will work. I used white medical tape on the backside of the surround with Goop under and on top of the tape. It hardly showed on the front of the sub.
Originally posted by ssackett:
Try using some Amazing GOOP on your surround first. That might do the trick and save you a few bucks.
If you need a recone, I second Fixmyspeaker.com!