5 feet for standard definition (seating distance is 2.0x to 2.5x times horizontal screen width for standard definition. 1.5x to 2.0 for high definition or 35mm) You might not like to sit that close, but for a real cinematic experience, these numbers are accepted to be best. I sit 12.33 feet back from my 80inch wide (92inch diag) screen. Which works out to a seating distance 1.85 times the width. It's just about perfect. At first it was overwhelming, but now I'm used to it.
I suspect some audiophiles are just trying to *not* justify a front projector [or at least a 65 inch]. ;-)
I suspect some audiophiles are just trying to *not* justify a front projector [or at least a 65 inch]. ;-)