I'm surprised you don't see more about it on here, but low frequencies can really do a lot of physical damage to stuff.
My projector broke around the time I got the Sub 1, which can't be a coincidence. Between that, the aforementioned drywall damage, and hearing everything from the HVAC return to the Wii sensor bar to the fireplace glass rattle when the sub kicks in, I really can't understand how people can tolerate tons of bass in a home environment. Maybe I just need to work harder on vibration isolation of stuff in the room.
Any ole big woofer can produce huge output, but I really appreciate how the Sub 1 can produce big output while also being tight and articulate with percussion and bass strings on music. It's quite a conversation piece as well; people have never seen anything like it.