Due to the quad polar design of the QS series, they are very forgiving wrt placement.

My QS8V4s are mounted on our back wall at about 5' from the floor. Due to the odd shape of our room, they are far from being equidistant from the MLP; however, Audyessy takes care of any anomalies that results in excellent surround sound.

QS series are a great design & are highly thought of...

TAM