Thanks brwsaw;

I'm sotra thinking along the same lines. As I said the AX5's have 10 inch drivers and if I were to put the ep175 in the center of the rear wall I'd get a well balanced effect.
I realize the ep175 is rather small and from what I've been reading in the forums lots of people are using much bigger subwoffers in an even smaller space. However, I'm not trying to build a real "home theater", I just want good surround sound for my TV and clear clean sound for my music. After all I'm a septuagenarian and quiet, good quality, sound is what I really want.
cheers, Orca