truck subwoofer box design/placement

I built a box for a truck last week with subs firing up (if you have the room) and port up. 4-10's and a single port in the center with baffles inside directing the air flow toward the center. Sort of like putting funnels on the back side of each sub in the box. Then two large baffles send ing that to the center. The port for a 3 cube box was made at 12" tall by 3.25" wide by 8" deep.

Hope this helps.

David