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For example, most people sit about 9 feet (108 inches) from their TV, so THX recommends a screen size of around 90 inches diagonal for that distance. That means the 55-inch you're looking at is not "too big," at least as far as THX is concerned.
Consequently, how far should you sit from a 55 inch TV?
A 55'' TV– You should sit between 7 and 11.5 feet away from the screen. A 60'' TV– You should sit between 7.5 and 12.5 feet away from the screen. A 65'' TV– You should sit between 8 and 13.5 feet away from the screen.
Additionally, is a 55 inch TV too big for a bedroom?
Crutchfield recommends a distance of 1 to 1.5 times diagonal screen size for 4K TVs and 1.5 to 2.5 for 1080p sets. Based on that, my 55 inch TV would have been fine anywhere between 55 and 82 inches, meaning that it would be a tad too small for my room.
For crowded rooms, you should go with at least a 40-inch screen if you are seated more than six feet from the TV. A 50-inch screen is good within 7.5 feet of the TV. If you are 9 feet away, a 60-inch screen is probably as small as you want to go.