Multiple Projectors : Single Image

[phil123654]

So my father has always wanted an incredible Home-Theater set up to watch his movies, and looking around online, he now wants a projector to display an image roughly 100" big.

Because I am the tech support in my house, I told him simply: " If you want a great image, you need a high resolution" and explained that a 1080p image on a 100" screen won't look nearly as good as a 4K image on a 100" screen.

With some research we found 4K projectors (the 'non-sketchy' ones) ranged from $2,000-$30,000

That's a bit much...

So I had this genius idea (based on Linus Tech Tips
https://www.youtube.com/watch?v=211Vdi4oC9o

What if I bought 4; 1080p projectors and hooked them up like Linus did. (1080p projectors can be found from $50-$150 a pop) ( I found one that I trust so I could get 4 exact copies)
I think it should work, right?

Each projector displays one, 50" image and they combine up to a 100" diagonal screen at 4K. and better yet, It should be bezel-less if I aimed them correctly.

I have only ever used TVs and Monitors, never once got to play with a projector; much less 4.
Is this a legit Idea? Is there a property of projectors that would make it impossible? I'm starting to get hyped and I'd like to know sooner rather than later if I'm wasting my time.

 

[jaslion]

So my father has always wanted an incredible Home-Theater set up to watch his movies, and looking around online, he now wants a projector to display an image roughly 100" big.

Because I am the tech support in my house, I told him simply: " If you want a great image, you need a high resolution" and explained that a 1080p image on a 100" screen won't look nearly as good as a 4K image on a 100" screen.

With some research we found 4K projectors (the 'non-sketchy' ones) ranged from $2,000-$30,000

That's a bit much...

So I had this genius idea (based on Linus Tech Tips
https://www.youtube.com/watch?v=211Vdi4oC9o

What if I bought 4; 1080p projectors and hooked them up like Linus did. (1080p projectors can be found from $50-$150 a pop) ( I found one that I trust so I could get 4 exact copies)
I think it should work, right?

Each projector displays one, 50" image and they combine up to a 100" diagonal screen at 4K. and better yet, It should be bezel-less if I aimed them correctly.

I have only ever used TVs and Monitors, never once got to play with a projector; much less 4.
Is this a legit Idea? Is there a property of projectors that would make it impossible? I'm starting to get hyped and I'd like to know sooner rather than later if I'm wasting my time.

Or you get a giant tv.
The biggest problem with driving 4 displays is the desync. The moment you start using more than 1 display for display an image across it you will start getting problems with the image lagging behind. However there is a solution for it but it's rather expensive. Quadro and firepro cards have a way better driver for multi screen syncing and will do the job. You do need to get one form the last 4 years and they are rather expensive.

EDIT:
Unless he is watching content higher thna 1080p it will still look the same as just using 1 projector.
Also the cost of maintaining 4 projectors gets expensive real quick. (power + yearly bulb replacement).

 

[phil123654]

So I'll most likely stick with one good 1080p projector. I've never used them before so I was just looking for input.