View Full Version : Please help me figure out screen size for JVC RS1.
nahtanoj 09-27-07, 02:05 PM Hello all. I'm designing a dedicated 16'x24'x9' home theater room. The width of the screen wall will be a little less than 16' as I'll have a 45degree angle at each end. Nevertheless, the flat portion should be about 13' wide and about 8-9' high. I plan to have the RS1 on a shelf that's an extension of a trey ceiling at about 8' up (maybe 7') and about 20-22' from the screen, although I have some wiggle room. I'll have 2 rows of seats: one about 22' away (or about 1-2' from the back wall) and one at about 15' or so.
I'd like to have a screen that's about 120", but would go anywhere from 100-130" depending on what's best. Also thinking about Stewart 130, which was recommended.
Please help!!
Buttabean 09-27-07, 04:23 PM I have a Stewart 135" diagonal 16:9 with a RS1 and have to say it looks beautiful. Going from 119" to 135" was a big improvement. So if your theater can use a bigger screen then 120" go for it. RS1 is about 15' away from the screen.
elmalloc 09-27-07, 04:30 PM LOL I love how tutmos always throws 159 everytime someone asks for screen size cuz he's using that with his RS1. =P
I think Stewart is too expensive.
Sherardp 09-27-07, 07:06 PM LOL I love how tutmos always throws 159 everytime someone asks for screen size cuz he's using that with his RS1. =P
I think Stewart is too expensive.
My thoughts exactly, although I have to admit, 159 does sound good. Screen envy.
drapp1952 09-27-07, 08:28 PM I can say that a 116" x 65" (133" diagonal) High Power works with my RS1 with an 800 hour old bulb. The brightness is just about right subjectively though I have not measured it with my light meter. I'd be a little worried that 156" diagonal HP could be too big with a dim image as the bulb ages.
A 120" wide High Power sounds good, especially if your viewers are well within the viewing cone - if you have five seats per row those on the outside seats will see a dimmer image. Three or four across may be OK with the projector mounted as low as possible behind the viewers' position.
A lower gain screen such as the Stewart as big as what we're talking would probably be too dim.
Dan
elmalloc 09-27-07, 10:24 PM its 2000 for stewart, 4000 for jvc rs1, 1700 scaler, 1500 lense =9200.
nahtanoj 09-27-07, 10:41 PM I currently have an Sharp single chip DLP XV-Z9000 with a 92" Stewart Firehawk. I suffer from the phenomenon where you get used to the screen size and it doesn't look so big anymore. 120" or more looks very big to me. I'm hoping for 120-133". I've been very pleased with the Stewart.
I'll have 5 seats (the individual recliners, like Berkline) in the back row (on an 8" platform) and 4 seats in the front row. Should I be worried about using a high powered screen because of the cone/hot spot that will fade on the end seats? Each seat is 40" with 2 arms, so the distance from the middle seat, and the end seat is about 6' or so. The Stewart 130 is about 1.3 gain, I think. Is that not enough for a 120-133"?
I'm a little worried about the price of the Stewart, but if I'm spending 20k on the room and $4800 or so on the pj, and IF the Stewart is better and $500 or so more, I don't want to cut corners. I read screen reviews linked from AVS and they did seem to like the Stewart the best.
If I can sell my 92" Firehawk, maybe I should get the Stewart.
Would it change anyone's opinion on size if my pj will be 20' away (since it'll lower the lumens)?
Ugh.
The RS1 can easily throw enough light for 159" using a high power screen and seating within the width of the screen. I can comfortably watch it with lights on. If you can afford to spend 20k on the room you can afford to replace a bulb after 1000 hours and dimming.
I like to throw out the 159" number a lot because I don't think most people realize it's a real option that can work. I used to have a 120" 4:3 with an old sharp and never dreamed I could go with 159 using consumer projectors until people started talking about the high powers here. I went out a little on a limb and got the biggest screen the room would fit and it works extremely well. I'll take some pictures maybe this weekend, need to get my camera back from my father.
If you have light control and the room the RS1 will easily handle it, even without it will.
Kevin W.
elmalloc 09-28-07, 12:52 AM show pics
LilGator 10-09-07, 12:46 PM http://www.myhometheater.homestead.com/viewingdistancecalculator.html
Seems to me that the THX recommended 36° viewing angle is pretty ideal for intended immersion in theaters... how big a screen you need/want depends on your viewing distance.
Maximum and Recommended THX viewing distances: THX also publishes standards for movie theaters to adhere to for THX certification. THX requires that the back row of seats in a theater have at least a 26 degree viewing angle and recommends a 36 degree viewing angle.
A screen size of 133" gives your first row (15') THX recommended viewing angle, and your second row at 21' would give you just at the THX maximum viewing distance, which looks to be your ideal setup.
If you really wanted to spring for the 159" look, move your front row to 17.8feet, and maybe nudge your back row closer to the wall.
Keep in mind a 159" screen will well cover your 13' available wall (138.8in wide), leaving you 8.58 inches on each side of the screen (not taking in account the screen border), may affect speaker plans, dunno- unless you are planning on those going in the cornered area.
A 133" screen would leave you exactly 20 inches on each side of that 13' foot wall (minus screen border).
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