Originally Posted by m3ss
wanna purchase an hd20, i have a few questions regarding
firstly, i haven't had the chance to see one yet, how does it compare to hitachi pj tx200 or 4805, these are the ones i have owned before. black level? screen door? also i read its kinda loud? how much so? i have a silent pc, dont really wanna have a 30dB pj near my ears, should i build a hush box, or is it ok?
the max projection distance i could use is 13.7 feet, what screen size should i aim for? (cant really have more place than 100-110" diagonal) btw do i have to place the projector at the center of the screen, or can it be opposite to the side of the screen if you know what i mean... with the tx200 i could play with the lens shift, i know i am vertically limited with the hd20, how bout horizontally? (i have a window opposite to the center of the screen, and the ceiling is like 13 feet high)
what kind of screen size and type shoud i aim for? i have light yellow walls, btw DIY screen, furniture board for my previous pjs, but nowdays screen prices are much more affordable. will it be an improvement btw? koz if it wont be much better, i might build another one like this, for like 20$
here is a picture of my previous diy board
thanks for your help and input!!
I had the Screenplay 4805 before my 720p HD70. And I now have the 1080p HD20. First, the HD70, I felt, was way better than the 4805. At the time I was using a 100" 16:9 screen. I found the HD70 resolution of 720p way worth the upgrade from a 4805. I enjoyed my HD70 way more than the 4805. And at 100" screen size, the resolution was extremely obvious between the two. If you have a PS3, xbox 360, upconverting DVD player, or a computer hooked to your projector, you will love the difference in picture on the HD20's 1080p resolution!
Fan noise on the HD20 and HD70 is also quieter than the 4805.
Screendoor? LOL, I had it with the 4805, but even just moving to the 720p HD70 that was long gone. And so with the HD20 there is also no screendoor effect. At least at 125" I don't see any even ultra close to the screen. Maybe if you sat 5 feet from a 200" screen. Maybe.
If you were happy with the 4805 fan noise and other things, then the HD70 and HD20 blow it away in my opinion.
I too have an ultra quiet HTPC in my theater. Even with the speakers muted, I would say my HD20 and computer are close to the say volume. Though they are both about 10-15 feet away from my ears where I sit.
Personally, unless you are going to have the projector literally right at ear level and close to your head, I don't see how you won't be happy with the HD20. Also the HD20 and HD70 are some of the quietest projectors around. I know there are a tiny few with lower db ratings. But most projectors are much louder than the HD20.
The HD20 and most DLP projectors, do not have any lens shifting in any direction. They also only have digital keystoning which you should avoid. So most DLP projectors must be placed center to the screen. They also have a fixed vertical image offset. So the image it not projected straight out from the lens. It is projected higher then the lens. The Projector Central calculator will show you how much of an offset from the lens center based on the distance and screen size you choose.
Is 13.7' the size of the room or the max that the front of the projector could be? Since it bases the distance from the front of the lens. If your room is 13.7' or about 13' 8", then the max for the front of the projector is about 12' 11" from the wall. Less if add a screen.
So that gives you a 16:9 99" to 118" image size on your wall at 12'11" distance from the lens. With a 7.8" to 9.3" image offset, meaning the distance from the lens center to the bottom of the image.
These are all numbers from the Projector Central pro calculator.
So basically with most DLP projectors, you basically put your screen where you want it and you pretty much have only 1 place it can be ceiling mounted and 1 place it can be table top mounted. With the only variation being a 2 feet of back and forth distance from the screen.
Hope that was helpful.