Steal away. Don't forget to post pics
Of course! I've had regular 15" sealed subs before but it is really hard to compare because I've never had a room like my HT before and that is probably the biggest difference. The IB subs certainly extend to very low frequencies and have massive amounts of energy. The difference I've noticed is that the deep bass creates a sense of dread when watching certain movies. The infrasonic frequencies somehow work at a subliminal level to add atmosphere and makes movie watching much more enveloping not to mention damn right scary at times. The effortless power of the IB's could certainly be created with lots of traditional subs but the fact that the IB is invisible (except when backlit) adds to the coolness factor. So are they worth it? I'd say that if the space allows for them, then yes. In fact I think I talked a friend into building some last night!
Tony, not sure what Stockmonkey means but I think he is asking about the DCX2496 because of the ability to flexibility control two sets of subs and separate tactile transducers.