I have them set in my living room 21x15x7 and yes there is an opening that I cannot close off.They are 9feet apart and the lisntening position is also 9 feet from the speakers 18 inches from the back wall,toed in an inch and a half.And yes there is a coffee table in front of the listening position. Ya have to put you're feet somewhere don't ya.By the way the ceiling fan has to be on to keep the amp cool.

Rick


"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud