Normal
The owner already had them in a 4th order wall designed by the dude who's boxes are on Sundown's site. I was shown the design. I think I may have gotten little more space to work with, but that thing is a wind tunnel. His previous box was more SPL'ish, like smaller sealed side and huge ported. The sealed side on my wall is quiet a bit larger to help those subs resonate with low notes.