They do like bigger boxes tho. i had my dd3512 in a 2.0 cu.ft @ 40hz and that was nice for more SPL but ****** for daily..I built a 2.8 cu.ft @ 34hz for my next one and it sounded awesome!!! It ate up that extra .8 cu.ft with no problem. I should have built a 3.0 cu.ft next but sold it..