Three projector setup... where to start

**peterkwu** · 11-24-2008, 03:27 PM

Hi all,

I've read a fair amount here but I'm still wondering where to begin.

I'm building a 737NG sim in a spare bedroom and starting to think about outside visualization. The room is 17 feet long x 10.5 feet wide. On one of the 17 foot sides there are floor to ceiling windows with a 2 foot wide column in the middle. The door into the room is directly opposite the column between the windows on the other 17 foot wall. There are blackout shades on the windows that work fairly well. The good news is that the ceiling in the room is 10 feet high.

My sim hardware is mostly 100% scale, mostly purchased from CockpitSonic. I plan to purchase a base and flight controls from Northern Flight Sim. The cockpit shell I'm not so sure about, it may come from one of the vendors or I may build it myself. I will be looking to constrain the vertical height to as little as possible.

This is a 2 pilot setup, so I am thinking that a three projector setup is the best way to go with a curved screen wrapping 150-180 degrees around. I plan to spring for an Immersaview curved screen and Sol7 software.

My question is what projectors will provide the best results? I figure about a ten foot throw for each, but I might need a lot of keystone correction as the projectors will be ceiling mounted. I might also wind up with shorter throws if the shell is so high that the projectors have to be mounted closer to the screen to have the beams clear the top of the shell.

So I'm wondering what projector specs will be most important. HDMI connectors? How many lumens? 1080p? I'm willing to spend up to $1500 US per projector.

Peter

**BHawthorne** · 11-24-2008, 08:50 PM

I'm not too hot on the idea of 16:9 or 16:10 projectors because of the required throw distance. Keep in mind that 3X 1080p is ALOT of pixels to push. More pixels means more in-game stuttering and oddities when the computer can't handle the rendering workload. Also if you go 3x 1080p you can't use a Matrox TH2G. That's outside the max resolution usable by the TH2G. I have a hard time justifying 1080p cost vs. 720p or 1280x1024 projector costs.

**oal331** · 11-25-2008, 02:19 AM

Originally Posted by peterkwu

So I'm wondering what projector specs will be most important. HDMI connectors? How many lumens? 1080p? I'm willing to spend up to $1500 US per projector.

Peter

I also reading, asking, searching for the same but i believe that outside view, does not need high detail (1080p), as needs an inside view, where we want detail in gauge's readings etc.

Some years ago, i have visited a friend's cockpit, having 800X600 projector and i had no problem
Today, we can find very good projectors 1024x768, for 500-650euros, having 2000Ansi and 2000contrast. From all that i'm reading, these 2 values giving a very good result in our home cockpit, based inside a room and not outside direct to sun light.
You can find more useful information in many many previous posts here and about projectors visit this site : http://www.projectorcentral.com/

Regards

Eddie Armaos
Athens-Greece

**BHawthorne** · 11-25-2008, 10:56 AM

I believe that short throw and high lumens will be the purchase points. I would recommend against 1080p projectors. The money can be spent on so much better parts in the sim. You will get a high immersion factor regardless of what projector you use. Depending upon your design, I'd suggest just 2 projectors and horizontal-span mode in windows xp. That'll save you the cost of 1 projector and $300 on the TH2G. That could save you over $1000 in many cases. The gameplay on 3x 1080p will simply not be fluid and smooth. 2X 1280x1024/1024x768/1280x720 options will be much better.

**oal331** · 01-06-2009, 06:35 PM

Originally Posted by BHawthorne

I believe that short throw and high lumens will be the purchase points. I would recommend against 1080p projectors.

Hi,

i found a BenQ Short Throw projector, the MP-771 model.
This one has 3000 Ansi Lumens, 1024X768 resolution and 2000:1 contrast ratio. The only problem, is that does not have ZOOM

and Keystone correction (edit 19/1/2009. it has keystone)

.
Of course, is more expensive than simple 1024X768 projectors.
What do you think about it?

Originally Posted by BHawthorne

I'd suggest just 2 projectors and horizontal-span mode in windows xp. That'll save you the cost of 1 projector and $300 on the TH2G. That could save you over $1000 in many cases. The gameplay on 3x 1080p will simply not be fluid and smooth. 2X 1280x1024/1024x768/1280x720 options will be much better.

What about the picture quality and captain's feeling, seating in front of these 2 projectors? How you made the view setup in Fs to give you a better feeling of surround? It's one big view, in zoom-out? Have you the view extended to left and right?

regards

Eddie

**peterkwu** · 02-17-2009, 10:49 AM

Hey everybody,

Thanks for your advice, I decided to start with an Optoma 525ST ultra short throw projector. Not cheap, but I have a very bright room, and so I wanted this to be a high quality projector. It has 2500 ANSI lumens and 2500:1 contrast ratio. It is mounted on the ceiling a mere 6 feet from the wall onto which it projects an image about 10 feet wide. The ceiling mount is from Perfect Mounts in Canada.

See the video at YouTube for a demonstration:

http://www.youtube.com/watch?v=tnJLL60RgJA

Peter

**SimDeck** · 03-25-2009, 08:26 AM

Hi Folks
(Peter if you are still considering a 3 projector screen we would be pleased to quote you) We are a distributor / manufacturer of a specialised range of screens including curved screens. Click the link at the very bottom of this post.

Just some comments on projection screens and the like for your sims. I am a specialist projection screen manufacturer and distributor, sim builder and have spent many years in the large screen biz and in recent years building our own simulation systems with the theme of "We put the reality into virtual reality".

I want to open your eyes up to some new possibilities and for many folk challenge their basic understanding of projection screens. Most of you will be using white surfaces, or a grey paint etc and 2000 - 3000ansi and dark room. It is what many av companies will tell you to do and your own epxerience will tell you similar. However this is the completely wrong approach to projection and especially for simulation. The most crucial first aspect to any projection system is NOT the projector but the screen....absolutely and without question.

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Regards
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ICE AV Technology Ltd
0064-9-414234

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