Absolute Performance: Best Known 18" and 24" Driver
We have got to stop saying that larger boxes reduce power handling. It's a meaningless statement. I mean, by that logic, we should be using 1 cubic foot boxes for our 18s, because, hey, more power handling, right? And Infinite Baffle is worthless because, hey, infinite box is way too big and has no power handling at all!
Larger boxes are more efficient than smaller boxes. End of discussion. The output at the mid/upper bass frequencies doesn't matter at all. First, a measly amount of PEQ will put all the upper bass power back into the system. Second, there's not a person on the planet who has ever complained about having too much under 20 Hz and not enough over 60. The low stuff is the hard part; by the time you get enough at 20 or below, you've got more of the high stuff than you need.