I think it IS a good idea to put your TV in first and then hear if you have a problem. Use a blanket to temporarily cover it. Until you get it, don't sweat it too much.
One rule of thumb I use is this: Room acoustics improve sound stage in the same plane. If you find you lack depth, improve room acoustics behind the speakers and behind you. If you lack width, improve room acoustics to the sides. Height? Same thing. Floor and ceiling.
Asides from the sound stage there's the question of tonal balance, and that is more of a room averaging thing than specific locations.
Best,
E
One rule of thumb I use is this: Room acoustics improve sound stage in the same plane. If you find you lack depth, improve room acoustics behind the speakers and behind you. If you lack width, improve room acoustics to the sides. Height? Same thing. Floor and ceiling.
Asides from the sound stage there's the question of tonal balance, and that is more of a room averaging thing than specific locations.
Best,
E