Looking at the picture of your system and where it is located, it is no wonder your beautiful Omega's are struggling to give a large soundstage, or any soundstage at all. Give them some space to breathe, and if that does not help, check into your upline components. I run the new Super 5 monitors, new Deep Hemp sub, 2 w/ch Decware SE84c+ SET amp, Audio Zone DAC 1, fed with 16/44 files from a headless Mac Mini. The sound stage is like nothing I have experienced in my 30 years in audio: deep, wide, open, and with beautiful positioning of the players on the stage. Also, low level dynamics are incredible.