I dont know if i would try a pro .5 ported.. It sure doesn't model up nicely. Winisd's recommended box is 9ft3 ported 22hz.. it goes to **** when you reduce the size and change the tuning. Dukk found this to when he tried porting a pro..

boston doesn't recommend ported either.

 

Thats what I thought too. The sub sounds fine as it is. I went back to take a listen and it all depends on the track. Some music you can gradually hear it get louder and others, its kind of quite and loud settings. Maybe im being to picky or maybe its the fact that it takes forever to turn the volume up compared to the old pioneer decks that went up to 35 on the volume **** and now go to 65.