|<font face="Verdana, Arial" size="2">-> What is the recommended distance between the screen and the seating position using perforated screens for HT?</font>
The seating distance is first determined from screen size and video resolution (doubled, quad, etc.). The next calculation then is to determine if, due to visual acuity, you'd be too close to the screen. I haven't found a screen (16:9) that was 92" wide or wider with a doubled picture where you'd be too close.
|<font face="Verdana, Arial" size="2">-> What are the differences between different brands? (Stewart or Draper and so on ...)</font>
The first obvious difference is Stewart is the only one that is THX rated which is your only assurance of it's video and audio qualities ... you know it's accoustically transparent. As to other differences perforation size, uniformity of perforations, acoustic transparency, viability of the surface (coating), and customer service. (Stewart has the high water mark on this count.)
|<font face="Verdana, Arial" size="2">-> What gain to use with a regular 7" CRT, 600 lumen.</font>
Well, once again, that depends upon NTSC, line doubled, tripled picture resolution and screen size. (In most residential sized theaters, you don't get far enough off axis for color off axis color shift to come into play.)
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