I just like to show a nice device that is fullfilling a lot of your requirements when you looking to enhance your single TV that is standing in the middle of the room.

Update: OK I have used this for the last few Month and I need to say this is awesome.

The Audio Quality is very Good, voices are crystal clar while the Subwoofer creates a good base for the sound.

I can say that this is a good choice if you have not that much money but like to have cinematic Audio in your Living Room.