I had good stereo separation from my Traynor K4 and My Roland BA330.

The folks that would disagree with me , are the same folks that never use stereo..

I set my Maui 11s minimum 12 feet apart unless stage area alters that. I like Dons idea of trying one then adding the other for you. If you play small n.h. rooms, one may be appropriate. But I would recommend two so as to allow the flexibility of larger rooms. And..you will probably get a better price per piece if you buy a pair. The Maui 5s are the smallest and lightest of the line, but don't discount the 11s. Gives you more and still option to use one exists. I've done restaurants to social clubs to small hotel ballrooms with them. Not gonna get into Bose vs other line array specs like Maui and JBL, they can be looked up and compared. I can simply vouch for mauis like others, I personally don't believe in paying top dollar for the Bose name when I can get sufficient performance from one of the others for a lot less.

+1 on the K4. I plan to use my K4 with my new Crumar Seven.

chas