I agree with Subaruguru that if your speakers are properly set up, the problem is with your equipment. Not that the equipment you're using isn't of high quality. However, some components have a deeper soundstage than others. If you're looking for improved depth in your soundstage, look no further than the Pass Labs Aleph line of amplifiers. I used to own the little Aleph 3 and it had the deepest soundstage I've ever heard in my system. Deeper than my old Aragon 4004 Mk II, deeper than my Classe CA-300, and deeper than my current BAT VK-500. I found the Aleph 3 (30 wpc, class A) lacking in the power and bass department--which was why I sold it--but the Aleph 5 (60 wpc) might work out well in your system. If you need more power and have the money, the Aleph 2 mono blocks offer 100 wpc. Recently there was a pair for sale here for $2,500--best price I've ever seen for them. Good luck.
3-D Imaging: How??
I'm finally satisfied with my current system, except for one thing: it is absolutely 2 dimensional except with a few discs in which you get a little depth. I have: Rega Planet, CJ PV11L, McCormack DNA.5, B&W Nautilus 805s. Interconnects are TARA Labs Master Gen 2, speaker cable is Audioquest SA-40 (hyper pure silver) on top, CV-4 on bottom(the CV-4 actually compares well to other cables I have tried) All equipment sits on marble slabs that are "tip-toed" to the concrete below my carpet. I'm using an Isobar Surge protector on the CD and Preamp, with a Sonic Horizons Daybreak power cord directly into the wall on the amp. The room is about 12" by 13", but I have a totally dedicated room with a good nearfield setup. Why is my sound 2-D?? Thanks guys!!