Ported subwoofer enclosure for 4 Phoenix Gold XS subs.

Here’s a few pictures of a subwoofer enclosure I helped design for my friend Rick.  Since he needs to use the back of his Suburban to haul things occasionally the box needed to be easily removable, yet it still had to be large enough to hold 4 Phoenix Gold XS 12 inch subs.  Here’s what I came up with.