I am 7 feet from viewing my 55" 4K TV, 7 feet from both angled mains, and 6-1/2 feet from the center channel. This is what I call my near field listening. All front tweeters are at ear level. My problem has been the TV people's voices/dialog projecting/blending in coming from the screen itself. Finding the right balance with having several center channel speakers, Klipsch R-25C, R-51C, RP-400C, PSB XC, and Elac C5.2, and going back and forth with the last three over time, the RP-400C has won the award in my 5.1 system. My basement HT room is 8 X 10.
The center channel is 4" below the TV screen on open shelving, and 3 feet from rear wall. The Klipsch RP-400C is best for my near field dialog, in watching TV and movies. Funny how things can sync or not.