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Posts referring to the Epson PowerLite Home Cinema 8700 UB
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Jun 14, 2011 9:13 AM
Thanks for your advice/help, guys! :)
Jun 13, 2011 6:36 AM
Didn't change any default settings on projector, but the bulb blew in 1408 hours. It's rated at 4000. It's been six months, so the bulb is technically out of warranty.
Is this to be expected in the future?
Anything I can do about it?
May 9, 2011 9:47 PM
I have a question pertaining to the Projector Central review of the Epson 8700 by Bill Livolsi, on November 18, 2010.
Bill stated the following:
"If we assume we are using a 120" diagonal screen, the middle of the throw range would put the projector at sixteen feet from the screen. Here you are at the optical sweetspot of the lens, and getting about 540 lumens in THX mode, which is plenty for a 1.0 gain screen of this size."
I calculated foot-lamberts as follows:
59"x105" (120" diagonal)screen = 43.03 sq ft
screen gain = 1.0
Lumens = 540
Illuminance = 540 L / 43.03 sq ft * 1.0 screen gain = 12.55 fL's
(that's with a new lamp)
Assume that the lamp loses 30 percent after the first several hundred hours and the fL's drop to 8.78 and at 50 percent lamp life fL's are at 6.27.
So, finally my question:
Did I calculate something wrong? 12.55 fL's is barely adequate (some like it around 12, while others prefer it much higher), but this is with a new lamp. After the bulb ages for only 200 to 300 hours the fL's will be way too low.
I either calculated something wrong or Bob's comment that 540 lumens is plenty for a 1.0 gain screen is not accurate.
Please help me understand what's going on.
Feb 16, 2011 4:48 PM
Hey everyone. So, after much inner turmoil and consideration, I have decided to squander my tax refund. 2010 was a horrible year, so at least something enjoyable should come out of it, right?
The more research I did on projectors, screens and setup (setting aside the audio portion for now), the more confused I ended up. So I'm hoping you fine folks might be able to provide your input. The choices are nigh overwhelming, and I've made what I *think* are some sound decisions, but I'll defer to your collective wisdom.
I have a "bonus room" upstairs at home, which I never use. It'll be very easy to control light, as there's only one window -- it's big, but I've already got floor-to-ceiling, lined velvet drapes on order which should block outside light completely. Most of the walls are painted a very dark brown in a flat finish. The dimensions, basically, are 16' x 19' with a 2' popout where the window is (which, really, makes the blackout drapes even easier to put up). The ceilings are only 8' high. Viewing distance would be between 16' and 13' from the screen, depending on which spot you're sitting in.
I've vacillated a great deal on the projector choice, initially drawn to the Epson 8350... then the Panasonic AE4000... then the Epson 8700UB. In the end, for reasons I myself cannot identify, I believe I've decided on the Epson 8700UB (unless someone knows a compelling reason why a different model would be a better option for me). I've also decided, somewhat arbitrarily, that I'd like a 120" screen. As this is an initial foray into the world of home theater projectors for me, I'm leaning toward the 120" Elite EzFrame 16:9, though I'm completely unsure whether the white or the grey would be a better choice for me.
60% of the time, I'll be using it for video games via the Xbox 360 or PS3. Then probably another 20% of the time for high-def movies (Blu-ray or HD content streamed over the home network from my computer). And another 20% will be spent watching (generally) non-HD streamed content from sources like Netflix or Hulu Plus.
Unless this won't work for some reason I haven't considered, my plan is to mount the projector on the wall at one end of the room (long-wise) maybe 1.5' from the ceiling and the screen at the other end. The distance from the front of the lens to the screen would be about 17.5 feet. I've decided to wall mount, because there's a flush-mounted ceiling fan smack-dab in the center of the ceiling, and I figured a wall mount would allow me to a) project *under* the ceiling fan and b) get the projector much closer to the center of the screen, thus minimizing the amount of vertical lens shift required. I can also mount the projector wherever needed side-to-side, so I should not need to shift horizontally at all (and ,y understanding is that it's best to minimize lens shift). At any rate, I'd prefer to keep the ceiling fan, if possible.
I'm attaching a couple of photos that show approximately where the projector would go and the size of the screen relative to the wall it would go on.
As I mentioned, the room will be light controlled. I won't say pitch black, but definitely very very dark. The carpets are a very light color, so I'll probably look for a large area rug in a darker color to minimize reflection. The ceiling is flat white, but I'm not averse to darkening it (within reason).
So, my questions:
1) Does this setup seem like it would work with decent results?
2) Given my usage patterns, does the 8700UB seem like the best choice?
3) Does mounting the projector as I've described seem like the best option? I'd originally thought I'd like to put the projector in the corner, near the ceiling above the chaise (see photo below)... but I think I might have been overestimating the amount of horizontal lens shift that was possible.
4) Assuming an Elite EzFrame screen is sufficient, should I do CineGray (1.0 gain) or CineWhite (1.1 gain)? Or would I need a screen with a higher gain entirely?
5) Is a 120" screen too big, too small or just right?
6) Would it be worth it to paint the ceiling a darker, neutral color? I won't do black -- the entrance to the room is an arched opening, so it's visible from the landing at the top of the stairs and I don't want to walk upstairs and see a room with a black ceiling.
7) Are you tired of these questions yet?
8) I haven't seen a lot of talk about video games and projectors. Do they play nice together? Is there some gigantic input lag when dealing with projectors that make any sort of fast-paced gaming impossible? Because that would suck. Part of the reason I'm leaning toward the 8700UB over the 8350 is the frame interpolation... I don't really understand it, but I thought it could potentially be helpful for fast action games.
Thanks for any advice or comments. These forums are a really great resource.
Jan 29, 2011 3:21 AM
I just bought a 8700 and it refuses to sync with devices at the correct frame rates via hdmi.
59.94hz syncs as 60.11hz.
23.97hz syncs as 24.02hz.
I don't remember exactly what PAL (50hz) syncs as, but every frequency is consistently off.
This problem is consistent between my HTPC (ati hd6870), xbox 360, and WD LIVE HUB media player.
With component cables, all frequencies sync PERFECTLY, so it's not a matter of the of the projector being unable to achieve these frequencies, it's more likely a handshaking problem via HDMI.
I had a phone conversation with tech support at epson, and the guy couldn't understand why i'd be concerned about this, but when watching television on my computer (my sole source for media,) there's a visible judder or repeated frame every 5-6 seconds at any framerate, caused by this dissonance between the frame rate of the video, and this obscure frame rate achieved by the projector.
I'm at my wits end, and i don't know what to do, or how this can be fixed. I've unwittingly surpassed my 5 lamp-hour return policy, so i'm stuck with this projector that i'm already starting to hate.
My only choice is to find a solution. Any ideas?
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