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Topic: Help with sizing Projector and Screen
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I would like help with sizing a screen and projector upgrade for our church. We want to move from a 4:3 Optoma which was dim (and now the lamp is out) and driven over VGA-to-RF (low quality), to an HD 16:9 or 16:10 with much more light output and HDMI or HDBaseT.

Our current screen is 10' x 8' at a throw distance of 16'. With a rear seating distance of 60' deep and 50' wide, would a screen of 20' x 12' be a good match? We have no windows, and lights on 9 dimmers, so we can get dark when we need to. Possibly a Draper electric screen?

About 5 months ago I was looking at the Epson PowerLite Pro G6900WU LCD projector, which seemed a good match at 6000 lumens, but the cost is high and I was concerned about the throw distance vs. light loss.

We currently only do song lyrics, but want to be able to handle powerpoint slides, pictures, documents for meetings, and movie night.

Are we sizing this correctly, and are there any other recommendations for projectors for this size venue?

Thank you for this forum,

Keith

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Old Screen and Projector

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I should add that we are planning a stage/dais remodel, to include enclosing some of the sides, and would like to incorporate the new screen into the center of the back wall.

The old screen canister is visible in the picture on the previous post, and the projector is mounted below the center hung speakers, at a hgt of 16'4" above dais, and 16' throw distance.

Keith
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As an opinionated person, I would be looking to build something that incorporates the screen and handles hiding the main speakers you have up there. They are a huge eyesore IMO and something I would like to see go away as part of the upgrade.

I stole this from the Infocomm website...
"For general video and PowerPoint viewing, 8:1 is recommended.
For reading spreadsheets and websites, 6:1 is recommended.
For inspection of visuals "without clues" (maps, drawings, medical charts), 4:1 is recommended.

So, if you are just viewing PowerPoint, 8:1 is fine. However, if people in the classroom are showing websites and expecting people to comfortably read them for hours at a time, 6:1 is recommended."

Those numbers: 8:1, 6:1, 4:1 are viewing distance to screen height. So take your 60' maximum viewing distance, and divide it by 8, 6, or 4 depending on the type of material to determine the proper screen HEIGHT.

Going on the low end, 60/8 = about 8' tall screen height. Going to the middle, a 10' screen height is recommended.

I would go with that size and likely you will be in a 16:10 format.

That's a 16'x10' screen - or 160 square feet. You want a very real 50 lumens per square foot to fall on the screen. It sounds like you have some light control, and you can use a minimal gain screen to increase brightness a bit. But, you want to throw a lot of brightness at this size.

You also MUST HAVE a tab-tensioned screen which is going to add to the price. Much like a shower curtain always has waves in the material, a non-tensioned electric screen is about the biggest waste of money out there. I would go with a cheaper/less bright projector for the short term - maybe not fill things all the way - instead of going cheap on the screen. A good screen will last 10+ years easily. A cheap screen will look bad in 2-3 years.

I would add that the projector you looked at was a VERY inexpensive and bright 1920x1200 projector. But, unless you plan to put up detailed maps, you don't need that resolution as a requirement.

Keep that in mind... You need 6,000+ lumens. You MUST have that light output, so you can't go down in price and really expect that quality when you are starting with about the least expensive solution.

I would look at this list...
http://www.projectorcentral.com/projectors.cfm?g=1&hide=0&st=1&mfg=&p=2500&p=10000&w=&r=&br=6000&br=12000&ll=<g=&t=&db=&dt=&c=&ar=Wide+%2816%3A9-10%29&dvi=2&wr=&pjl=&pjw=&pjh=&td=&i=d&is=&sort=%24&sz=15

This one would be near the top of my recommendation list:
http://www.projectorcentral.com/Panasonic-PT-EW730ZU.htm

It's not a 1920x1200 projector, but it has the light output you actually need and includes a lens for that price. You can get it without any lens, then order the lens you need for a specific throw distance if you would like.

You will need to figure out sources, and budget for HDBT extensions for the system as well.

While you can get models at and beyond 8,000 lumens, it almost doubles the purchase price to get only about 15% more brightness, and isn't worth it really.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
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Thank you, AV_Integrated, for such helpful info and insight.

I have been absorbing your input, and working on guidelines to submit for our planning committee. I am considering you projector recommendation, and 16' x 10' screen size.

Our remodel will move the choir to a central area under the larger screen, partially recessed into an alcove, with 45 degree walls on each side, and will allow elevator access to the dais/stage and 2nd floor.

Keith

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Front view of Stage

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