Thanks to all the responders...
Alan, unfortunately my available HT space is on one side/half of our ~25'x17' lower level, so I only have 3 walls available - the 4th wall seems too far away to mount on and maintain good sound (plus I have the decorating constraints of my wife). The available side wall has two windows on it as well. I've been theorizing about making a solid-faced L-shaped 'bracket' to mount on the top of the bookcases such that I could attach the speakers with the included hardware and thereby allow them to hang over the edge of the bookcases at the back of the space. The rubber foot idea is very interesting as well. Could probably try both options and see which works best. Seems like the idea of using the QS4s isn't totally defeated and I get the impression from other reading that the surround effect might be better in my space than an additional set of directionals.
Thanks very much!
-Doug
