Been lurking in this forum for quite sometime with my main objective to re-create the images that I have seen on HDTV's
AFter looking at the super sony comparision I wonder if it is possible.
How about the rest of you, do you think it is possible with a higher grade LCD?
AFter looking at the super sony comparision I wonder if it is possible.
How about the rest of you, do you think it is possible with a higher grade LCD?
No, honestly I don't think it's possible with current technology.
Well, I think it's possible but you'd probably spend more on making it than you would simply buying an HDTV set.
Well, I think it's possible but you'd probably spend more on making it than you would simply buying an HDTV set.
Even $5000 LCD/DLP projectors can't do true hdtv (1920x1080). Right now only crt projectors can do it currently economically. I know JVC has a D-ILA projector that can do true HDTV. I beleve it is rated at over 7,000 lumens, and must cost atleast 100k+
well, let me clarify a little bit.
Can we get similiar results to what the grand wega puts out? When I mean HDTV I am talking 1080i or similiar results even 720p.
Can we get similiar results to what the grand wega puts out? When I mean HDTV I am talking 1080i or similiar results even 720p.
Well if you are talking 720p then that is easy to do with a good panel. I believe that it is 720x1250 or somewhere in that area, There are lcd monitors and real projectors that can do that resolution. That main thing is that right now only ABC is broadcasting in 720P, and ESPN-HD when that channel starts up, but all the other Hd channels broadcast 1080i, which means you will have to downcovert them.
Yes, it's possible with the current technology. I don't know where that came from. Anyways, a UXGA panel (1600x1200) is pretty darn close to 1080. Slap on an anamorphic lens (see thread) and your a lot closer to true high-defination then any manufactured DLP or LCD panel (which never exceed 1280x1024 native res).
To follow up on that, it won't be worth your while unless you spend $1000-1500. None of those "bargain" rear-projection TV's for around $1500 or so have a true 1920x1080 resolution. The costs come down to this:
GOOD 575W or 1000W MH OHP (anything less would be a waste since your going for the gold here) - $300-500
UXGA panel w/ good contrast ratio - $300-$650
LCD Controller - $300-$600
Anamorphic lens, screen, supplies, etc. - $200
This kind of setup blows away any manufactured projector that costs less than $6000. There are two challenges. One is to find a good panel. 15" UXGA ones are common, but ones with a 400:1 CR or better aren't. The second challenge would be modifying your OHP to use a 15" panel. You'd have to buy a bigger fresnel (they exist somewhere, probably costs $150 or so), but it would work.
The workable yet expensive solution is to $1300 or so on a Dell, IBM, or Toshiba laptop that has a 400:1 UXGA 15" panel. Then you don't have to worry about buying a controller. However, you'd need to buy some sort of PCI card expansion bay to add on a video capture card and/or HDTV tuner card. One benefit of this is that it eliminates the need to dedicate a computer.
Keep in mind this will never work for a "True" DIY projector. Only an OHP projector. High-res panels that are small enough to place directly behind a projection lens are not available to general consumers, and they cost $3000 and up.
GOOD 575W or 1000W MH OHP (anything less would be a waste since your going for the gold here) - $300-500
UXGA panel w/ good contrast ratio - $300-$650
LCD Controller - $300-$600
Anamorphic lens, screen, supplies, etc. - $200
This kind of setup blows away any manufactured projector that costs less than $6000. There are two challenges. One is to find a good panel. 15" UXGA ones are common, but ones with a 400:1 CR or better aren't. The second challenge would be modifying your OHP to use a 15" panel. You'd have to buy a bigger fresnel (they exist somewhere, probably costs $150 or so), but it would work.
The workable yet expensive solution is to $1300 or so on a Dell, IBM, or Toshiba laptop that has a 400:1 UXGA 15" panel. Then you don't have to worry about buying a controller. However, you'd need to buy some sort of PCI card expansion bay to add on a video capture card and/or HDTV tuner card. One benefit of this is that it eliminates the need to dedicate a computer.
Keep in mind this will never work for a "True" DIY projector. Only an OHP projector. High-res panels that are small enough to place directly behind a projection lens are not available to general consumers, and they cost $3000 and up.
HDTV
not DIY projector
not DIY projector
An externally hosted image should be here but it was not working when we last tested it.
Thanks guys for the replies. One of the reasons that I brought this question up was because people have been building speakers for years that rival speakers that cost 4-5 times what it cost to build theirs
It seems like we have the technology to create our own tv's know but no one has taken the high end plunge yet.
I am still working on how to build a RPTV with a LCD after looking at the grand wega II. It can be done, just requires a little more research.
It seems like we have the technology to create our own tv's know but no one has taken the high end plunge yet.
I am still working on how to build a RPTV with a LCD after looking at the grand wega II. It can be done, just requires a little more research.
I mean a grand-wega is a perfectly doable project. The main thing is to reproduce the optics that the wega uses. You could take an and old bigscreen and rip out its guts and use it as a base for your project.
Lifter said:
Possible, but not cost effective, as I notice you stipulate in your next post from the one I quoted.
It all depends on what you consider "cost effective". Personally, I think it's the only way to go if you want a projector. You've got ends of the spectrum, the absolute best, and the bare minimum. Look at the "DIY vs. Commercial" comparison.
"Absolute Best"
1. DIY route: $1500. See my post above. 1600x1200 res, 400:1 contrast ratio.
2. Commercial route (DLP): $6000 - $40000. 1280x768, 1000:1 contrast ratio or better.
"Bare Minimum"
1. DIY route: A cheapo OHP and an Nview Specrach C. $200 max.
2. Commercial route: $900. 640x480. Nice contrast ratio though.
I think no matter how you look at it, the DIY route is better. If you need something that's portable, something that can project on a GIANT auditorium screen, or something with pure black levels, then the DIY won't work. But most people just want a big TV screen that they can watch movies and play games on and looks nice. I think the DIY route is the way to go. Most people aren't smart enough or just aren't aware of the concept to do this. If they want a projector they have to pay more than we do.
"Absolute Best"
1. DIY route: $1500. See my post above. 1600x1200 res, 400:1 contrast ratio.
2. Commercial route (DLP): $6000 - $40000. 1280x768, 1000:1 contrast ratio or better.
"Bare Minimum"
1. DIY route: A cheapo OHP and an Nview Specrach C. $200 max.
2. Commercial route: $900. 640x480. Nice contrast ratio though.
I think no matter how you look at it, the DIY route is better. If you need something that's portable, something that can project on a GIANT auditorium screen, or something with pure black levels, then the DIY won't work. But most people just want a big TV screen that they can watch movies and play games on and looks nice. I think the DIY route is the way to go. Most people aren't smart enough or just aren't aware of the concept to do this. If they want a projector they have to pay more than we do.
- Status
- Not open for further replies.