cone

I was cleaning my room today and set a 15" midbass driver out in the hallway. One of the dogs came to see what I was doing, and stepped on the cone The speaker still works, but I'd like to fix the hole. It's just a speaker I use when I'm working out in the shop, so I don't care what it looks...

Does anyone know if you can re-cone a 12" MTX Jackhammer and how much it would cost?