Limited soundstage between speakers

In-phase signals will appear between your two speakers. Out of phase signals will appear outside the speakers. Speaker placement can cause 1st reflection points to create bounce off walls etc and this can/will create a sense of a wider sound stage, however it comes with some expense, i.e. resolution, and tonal changes. Some folks like this, some folks aren't aware of the difference (or care).

In a well set up system you should not hear sound from beyond the outside of the speakers unless it is in the recording. 

Mahgister, What a rude post!

Who really knows what you hear in your room besides yourself and I fail to see anything in soix’s post that comments on you or your subjective beliefs. Some of what you have set forth in this thread and some others I’ve read makes good sense, but much of what you have said is so lacking in specifics as to make your post(s) incomprehensible. Clearly what soix has said is correct. You should research this subject more carefully and not just rely on your empirical conclusions and fire off such a self aggrandizing post.

I erred. First time this month! :-) Its a FOZ by Black Ice not Fusion

rrm, I've been giving some thought to things that you might do to 'improve' your soundstage, but  nothing I've come up with can create the outside of your speakers soundstage which you initially indicated that you wanted to obtain. Others have discussed set up of speakers and listening position. I believe someone mentioned the Cardas system which is a good place to start, if you haven't already got a good placement of speakers and listening position determined. 

For consideration is an add on devise that has been around for a few years and has gotten good reviews. It is a Fusion FOZ. It is tubed unit which allows you to control the out of out of phase information in your recording. In older recordings (and some new ones as well) which seem to have a too centered image, albeit still stereo, by increasing the strength of the out of phase signal in mix in the recording you can get a much expanded soundstage. Wider/higher/fuller. BUT it will not create sound outside of your speakers on the plane of the speakers, but can easily fill the wall behind you speakers. The good news - it is not expensive and it sort of acts as a tubed buffer (if you want one). The bad news is it is not exceptionally transparent and works best, I think, in a tape loop. Further, by increasing the out of phase signal you do reduce some of the in phase specificity. It has a bass control as well if you need it. The unit is a bit bass rich and you might. Underwoodwally sells them if your interested. They are relatively cheap. Something to think about....or not. :-)

rrm, Your room dimensions are close to identical to mine. Our set up is a bit different in that my speakers are 5 1/2’ from the back wall and I listen on axis about 9 ft back (about 4 1/2 ft from the wall behind the chair . I’ve minimized side wall bounce and have irregular diffusing stuff on wall behind speakers. If you can you might try moving your speakers a bit closer to the side walls and increasing your toe in to minimize first reflections off the side wall. Toe in slightly in front of your head could help depending on the design of your speakers. Something closer to an equilateral triangle. It could/should perhaps give you a soundstage that fills the wall behind your speakers (assuming that the information is in the recording). Good luck.