Honkey, you're not the only one with the 15.. i've got one on the way. Well, as for the sub box havoc, you could go for the 12" lambda acoustics PB sub. The box would be about half the size of Honkey's one. If you can make a custom box for the sub, then go for it. You'll probably save a lot of space if you're good at it.
By the way, we go for the larger subs cuz we not only want it to sound good, but we want it to feel the bass to the point of sexual pleasure
