"Can the 30.7 owner do it to in their home?"
Why couldn't they? Most dealer showrooms and most shows for that matter, are not capable of demonstrating very large speakers effectively. In most if not all cases like these, the dealers are more than willing to set the speakers up in your home and let you try them with your gear. I can assure you there're a lot folks out there who have very large rooms which allows them to enjoy very large speakers. I'm not one of them but have friends who can easily and properly place speakers that size in their great rooms.
Why couldn't they? Most dealer showrooms and most shows for that matter, are not capable of demonstrating very large speakers effectively. In most if not all cases like these, the dealers are more than willing to set the speakers up in your home and let you try them with your gear. I can assure you there're a lot folks out there who have very large rooms which allows them to enjoy very large speakers. I'm not one of them but have friends who can easily and properly place speakers that size in their great rooms.