I've seen those monster speakers before. Monster room, that I think he had specially made for the purpose. But why the clocks? He obviously hasn't done the swept sine at decent power in the room to find out what is resonating.
At least the room is symmetrical.
Swept sine is a damned good way of finding out what is rattling and resonating in a room. From Nelson Pass (he of Pass Labs) in http://www.firstwatt.com/pdf/art_elpipeo.pdf "Funny things happen when your speakers are flat to 13Hz. You have to be careful about your tone arm, your windows, your neighbors, and your bowels."