How do you calculate the
best seat-to-screen distance for a TV or
projection screen? Divide the size of your screen by .84 (screen size is
measured diagonally). For example, a 65-inch TV divided by .84 equals a 77-inch
viewing distance (6.5 feet).
Seat-To-Screen Viewing
Distance Calculations
If your HDTV is going in a
living room with limited space, THX recommends the following:
35 inch class TV = 3.5-5
feet away
40 inch class TV = 4-6 feet
away
50 inch class TV = 5-7.5
feet away
60 inch class TV = 6-9 feet
way
It might seem that THX is
recommending a very large screen size for your room. But, it’s important to
note two things: 1) THX screen size recommendations are based on recreating an
immersive cinematic experience, and 2) the biggest complaint among TV buyers is
that they wish they had bought a bigger set.
Vertical Placement
Make sure each seating
position in your home theater has a clear site line to the screen. Try not to
place the screen too high on the wall – viewers should not have to look up more
than 15°.
Before you buy your next
HDTV, check out the THX TV & Projector Buyer Guide.
Source: thx