All the above is great advice. Start with maximizing speaker placement. Looking at your system pics, I am not surprised by the lack of soundstage depth. The sub may need more placement tweaking too. After maximizing placement, only then would I start down the path of room treatments - which you very well could still need.
Here is a good place to start: http://www.cardas.com/room_setup_main.php
Be patient and do everything in a step wise process ALWAYS listening to your preferred reference track between each move. Good luck - I know you will find the soundstage depth and width you want!
Here is a good place to start: http://www.cardas.com/room_setup_main.php
Be patient and do everything in a step wise process ALWAYS listening to your preferred reference track between each move. Good luck - I know you will find the soundstage depth and width you want!