blown Cerwin Vega D-7E speakers

[batmanscvd-7e]

Hey fellow beginners,
How do you tell how big your subwoofers are and what would be the best subs to replace the subs in my CV D-7Es that are blown? I've already taken the subs out so I was just wondering what the best replacement subs would be. Any help would be appreciated.
thanks/later/Batman

 

[zumbo]

http://www.cerwinvega.com/service/index.html

Click on component rebuilding in the left column.