Both subs you mention are excellent and have comparable response curves (PB12-Plus/2 vs. EP500). Because of your giant cave of a room, it may be possible that the extra driver and tuneability of the SVS would be of greater benefit than the active DSP technology of the Axiom. I would definitely give both companies a call to discuss your situation before coming to a final decision, though.

EDIT: Of course, if you can swing dual EP600s, that'd b e the best way to go.

Last edited by pmbuko; 07/06/05 06:29 PM.