I visited the local audio shop the other day and listened to a Mirage OMNI S12 sub. It did rock the room. Actually so much that a crack was evident on the wall about 7 feet long. The guys is the shop said the sub caused the crack and I went on ....Ya Right. Any way, anyone care to compare this sub (meaning having listened to BOTH of them) to the SVS PB12-Plus. Other than very poor workmanship, can a sub do this much damage? Thanks folks.