Dual XiNBP212 Bandpass Box
Senior Member
Joined: Oct 2004
Posts: 223
Likes: 0
From: denver, co
did you look at the port calculator, so you can tune your box. but i would do this once you know what sub you are using.
http://www.the12volt.com/caraudio/boxcalcs.asp#por
http://www.the12volt.com/caraudio/boxcalcs.asp#por