I recall reading somewhere that there is a rule of thumb for calculating the proper distance to sit from a tv. There were two numbers, one for 16x9 and one for 4x3. The 16x9 was an easy round number like 1.5 or something. Anyone know what the correct ratio is. I could flip through my old magazines but that could take forever. I have the ratios for proper acoustics. My plan is to design a home thaeater in the basement of our house being built.