I picked up 3 of the XV-15's today at their shop!
Here is an XV15 next to an SVS PB12+/2
I think my wife will kill me when she looks behind the couch, we have no reason to get into that closet
I could stack them to the right of the close to take up less floor space, but a 6ft high stack of these might look a bit scary!
I calibrated with audyssey xt32 (denon 4311) and did minor listening with all subs engaged. Of course it sounded amazing. I turned off the 2 svs subs and it still sounded amazing. These subs are very powerful. I plan on watching the hunger games tonight to give them a proper workout.