I suppose you are right. It's just a frame of reference. It's probably the room that is picky, could be both. Although when I had some friends bring their subs over to do a little comparison a couple years ago we found the SVS was easier to place than the EP350 or the Hsu. So ??? There are probably many factors.

"That's some catch, that Catch-22." "It's the best there is." M22ti VP150 EP350 QS8 M3Ti