I have a decent size room 20’x33’x9’.  Due to the placement of some large columns I need to place my equipment on the long wall.  While I can achieve an equilateral triangle between seat and speakers (11’ on all sides) .... I am unable to have the front of the speakers more than 3’ from the front wall.  I am using Avantgarde Uno speakers with Pass Labs XA 60.8 amp and AR Ref 6 pre.  Sources are Lumin X1 and SME 20.  The overall sound and imaging are wonderful.  There are two problems that I can’t seem to get right.  First, the soundstage is rather narrow ... does extend beyond the speakers (have tried every off to on axis position).  Second, the image is detailed/precise but not deep ... it just sort of hangs on the wall 3’ behind the face of the speakers.  I believe that the problems are due the speakers not being far enough from the front wall but I can’t move them out more (due to the columns I mention).  Any suggestions on how I might fix these two problems?
You've 11 feet. Why not bring them out another foot? Bring them closer together and fire straight ahead. Remove rack from between speakers. 
One possibility is that the image isn't forming as you are almost near field and the driver output hasn't integrated at the listening position. 
You may want to try putting diffusers on the front wall behind and between the speakers, if the esthetics are acceptable. Diffusers tend to enlarge the sound space but in some cases might compromise image specificity. Just need to experiment with the placement (on the wall) to optimize the sound you like.
Did you have these in a different room where you experienced a larger soundstage with them out further? Do you know that they are capable of larger sound? I don't know much about the speakers but I know that all  of them have different points where they excel.  Others have given good info. That said, Why not pull the speakers out a little  further and see what happens?