B&W 803S Speakers

Hmmm... I find the 803s much better than the 683. But it is a big price jump! They image much better and have tighter bass. The highs also have wider dispersion.

But for your room the 803s would be way too much. I had a pair of 703s in a 12x11room (during a move transition) and I could not get the bass under control. Plugging the ports helped. But the real problem is if you move the speaker far enough out from the walls to get the bass under control the sound stage would compress and not sound right.

Anyway you should add the 805s to your list too. They are very good and would be a good fit for your room.

I don't think you would need a sub but I don't like my bass over done. The 805s is pretty balanced but does not go as deep as the 803s. You will just have to use your own ears.

I find B&Ws image best when they are far apart with a lot of toe in ( almost straight at the listener). With the smaller 805s you will be able to place them closer to the wall (8ft apart and two feet from the side walls) with out issues. I would think two feed would not be quite enough room for the 803s to sound their best? Some one who has owned them could tell you better.

PS. Call up B&W as see what they say. I have found they are pretty helpful with questions about room size and what not.