Hi Gary, I have a 13'6" x 20 room with a 55" tv. With the cover I cannot
hear any negative sound. I did hear I brightness without it. The tube traps
helped because I cannot bring my speakers much more into the room. I have since added a quarter trap above the TV. The diffuser was a large improvement.
I also just added stillpoints which work much more than I ever thought they
could. The difference from day one with no treatments until now has been
amazing. I wouldn't think twice about getting a 65" TV as long as you treat it.
Good luck and enjoy your new room.
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