Lack of depth problem

I get the best results by beginning with positioning the speakers facing straight ahead and to the nearest mm from the front wall (the wall behind the speakers that you face). Then incrementally toeing them inward to get focus without losing the width of staging. There is a sweet spot.

I should add that both my Thiels and Vandersteens are faced straight ahead; I have always found they sound best that way.

A thought, beyond the set up issues and choice of electronics both of which play a great role in creating a good sense of front to rear depth of image and which we cannot comment on because of a lack of specific information. (BTW what are you using for electronics and how far are your speakers apart and how far from side walls, what have you done to reduce/eliminate first point reflections which are killers for good depth of image.

Are the sources you are listening to recorded properly so that the depth of image is present in the recording. Most are not so it is not unusual for absolute depth of image to be missing. Like trying to get blood out of a stone.

Do you have sound panels on the wall behind the speakers? Sometimes overly damped front or side walls can reduce the perception of depth, since you might get very little ambient information.

What are you driving them with? There are a lot of amps that allow no sound stage depth(few SS amps will). My Cary monoblocks will, and that depth increases dramically with the right driver tubes. There are more variables than just the speakers. Lots of things get in the way of ambience recovery(amp/pre/source/tubes/cables). Your room dimensions sound really nice for audio. Is there anything between the speakers? How far apart are they? Did you have much depth with the system before changing the speakers? This CD contains some tracks that are excellent diagnostic tools for setting up your system: (http://www.chesky.com/core/details.cfm?productcode=JD037&category=1)

I'm not a proponent of the parallel to the wall camp.

Generally speaking, and that is not carved in stone, I find most speakers sound best when they are toed in so the inside surface is barely visible from the listening position.

Different dispersion patterns and listening preferences will, of course, be the final determinants.