now u know if the box is too small for the subs dimention wize it will blow your subs within time.. i went to ave and they aere the best in makeing ported boxes and they recoment people buy made ones then makeing there own cuz you would need to know the peak power of the sub and the space it would need so the air traped in the box wont blow the sub but if you want go to aveonline.net and ask thell teach u to make one lol ight peace..