So, I'm looking at tech info for Image Dynamics subs (probably going to get 2 IDQ10 D4 V.2's, IDQ 10" dual 4-ohm voice coil new version). What affect does the difference in the box volume on sound output, as far as actual output is concerned? Does a bigger/smaller box just shift the response curve over? I want as even a curve as possible to replicate the song as accurately as I can, I'm not a big boom-boom bass guy or whatever, so I'm definitely going sealed enclosure, just trying to figure out what size to build em. Here's the link to the spec sheet for the subs I want... IDQ10 D4 V.2 Also... Can someone explain the whole "-3dB" thing to me? Is that some sort of a standard notation for measuring sub output at a given frequency or something? It looks like they use that to measure the difference between enclosure volumes, but I don't really understand what they're pointing out. Also... anyone run these subs? Any firsthand experience with the quality? Suggested prices? I'm gonna be running these bridged on a Zeus Z400 (400w x 1 @ 1 ohm), think that'll be fine? Thanks!