Box with 4 12's was just too **** big and sounded a little sloppy in 50hz and up range. Junked that this spring.
So as not to be without tunes I did this one up at my farm before I came home. I sort of did up the specs in my head on a long drive when I knew I was going past a home depot. The kid on the saw did a **** good job with the cuts and I had planned it so it used 1 sheet of wood with almost nothing left over. Box was 6 cube tuned @ 37hz. Ceramic sig 12's sound really good in 3 cube tuned to 37 in my jeep.
I decided to use caulking rope to seal the baffle on... this makes things air-tight and allows me flexibility to throw different subs in it by swapping baffles.