My bro runs 1 15" 7500 (ported). Great sub!
The specs are only for ported, not sealed.
Matter of fact, I read a post over at CarStereo.com in 'subs' about someone who tried to seal a 9500 with bad results!
My advice and MTX: Go ported!//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif