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Topic: Projector recommendation for large meeting room
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Joined: Jun 19, 2013
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Hello,

I'm currently exploring purchasing two new projectors. I am responsible for setting up AV at our conference annually. We currently own two 12x9 screens. The projectors we use work ok, but I think we can do better. The ballrooms that we set these screens up in are usually set to hold around 400 people. I would like a projector that is set up for short throw and is nice and bright. I would also like a projector that has a variety of inputs including VGA and HDMI. I will investigate and research all suggestions so budget isn't and issue at this time.

Thank you!
Joined: Jul 19, 2007
Posts: 25
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Hello, you might want to look into the Hitachi,cp-WX8255a.

You could use a short throw lens.

Here is a link to the PDF of this projector :

http://www.simplevu.com/en-ca/Products/Details/1

Then click on CP-WX8255A.

you will find on page 4 of the PDF document the lens chart.

This projector has both HDMI and VGA inputs.

I hope this helps yoy.
John Mac Donald

www.simplevu.com
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Joined: Jun 19, 2013
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Quote (jmacdonald on Jun 22, 2013 10:20 AM):
Hello, you might want to look into the Hitachi,cp-WX8255a.

You could use a short throw lens.

Here is a link to the PDF of this projector :

http://www.simplevu.com/en-ca/Products/Details/1

Then click on CP-WX8255A.

you will find on page 4 of the PDF document the lens chart.

This projector has both HDMI and VGA inputs.

I hope this helps yoy.

It does help. Thank you! I will look into it.
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Joined: Mar 28, 2005
Posts: 13,162
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I try to point out things that I wonder about first of all...

But, the fact that you have 4:3 screens when everything on the market is moving towards widescreen is of a real concern to me. You have 12'x9' screens, which were awesome back in the days of 4:3 computers, and 4:3 TVs, but at this point, they are significantly outdated.

So, if you want to stick with those screens, I would still get a widescreen projector and keep the 12' width, but forget about filling it top to bottom.

That said, all you need now is math.

A 12' 16:9 screen is 81" tall. About 7'. That's about a 84 square foot screen. Call it 80 square feet.

Realistically, in a conference room setting with 'normal' fluorescent ambient lighting, you want 80 ADVERTISED lumens per square foot to achieve a minimum 10:1 contrast ratio on screen.

80 times 80 is 6,400 which is the lumen count you are looking for as an absolute minimum at that width.

With a 9'x12' projector - you are at 108 square feet (4:3 aspect ratio) and at 80 lumens per square foot, you are at about 8,600 lumens as a minimum projector requirement.

Sticking with widescreen, this is the list I would be looking at...
http://www.projectorcentral.com/projectors.cfm?g=1&hide=0&st=1&mfg=&p=&w=&r=&br=6500&br=15000&ll=<g=&t=&db=&dt=&c=&ar=Wide+%2816%3A9-10%29&dvi=2&wr=&ol=1&pjl=&pjw=&pjh=&td=&i=d&is=&sort=%24&sz=15

All of these have interchangeable lenses. I did not put a maximum on price, but they get crazy expensive. It is sorted by price, so the least expensive model is about $5,500.

Only TWO of these are called out as 'short throw' projectors. That's just reality. A good image doesn't really happen with short throw projectors, the optics are crazy expensive, and it just isn't a widely required solution with large screens. The reason people most often buy short throw projectors for business use is for interactive white boards - and those images are far smaller than your request, so you really aren't going to get much in the way of short throw, but a short throw lens is often available - about 10'2" is the ONLY spot that Panasonic can throw a 12' wide image from with their .8:1 fixed short throw lens.
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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Quote (AV_Integrated on Jun 26, 2013 6:42 AM):
I try to point out things that I wonder about first of all...

But, the fact that you have 4:3 screens when everything on the market is moving towards widescreen is of a real concern to me. You have 12'x9' screens, which were awesome back in the days of 4:3 computers, and 4:3 TVs, but at this point, they are significantly outdated.

So, if you want to stick with those screens, I would still get a widescreen projector and keep the 12' width, but forget about filling it top to bottom.

That said, all you need now is math.

A 12' 16:9 screen is 81" tall. About 7'. That's about a 84 square foot screen. Call it 80 square feet.

Realistically, in a conference room setting with 'normal' fluorescent ambient lighting, you want 80 ADVERTISED lumens per square foot to achieve a minimum 10:1 contrast ratio on screen.

80 times 80 is 6,400 which is the lumen count you are looking for as an absolute minimum at that width.

With a 9'x12' projector - you are at 108 square feet (4:3 aspect ratio) and at 80 lumens per square foot, you are at about 8,600 lumens as a minimum projector requirement.

Sticking with widescreen, this is the list I would be looking at...
http://www.projectorcentral.com/projectors.cfm?g=1&hide=0&st=1&mfg=&p=&w=&r=&br=6500&br=15000&ll=<;g=&t=&db=&dt=&c=&ar=Wide+%2816%3A9-10%29&dvi=2&wr=&ol=1&pjl=&pjw=&pjh=&td=&i=d&is=&sort=%24&sz=15

All of these have interchangeable lenses. I did not put a maximum on price, but they get crazy expensive. It is sorted by price, so the least expensive model is about $5,500.

Only TWO of these are called out as 'short throw' projectors. That's just reality. A good image doesn't really happen with short throw projectors, the optics are crazy expensive, and it just isn't a widely required solution with large screens. The reason people most often buy short throw projectors for business use is for interactive white boards - and those images are far smaller than your request, so you really aren't going to get much in the way of short throw, but a short throw lens is often available - about 10'2" is the ONLY spot that Panasonic can throw a 12' wide image from with their .8:1 fixed short throw lens.

Thank you for your reply. We always use VGA connections at this time which lends itself to the 4:3 resolution. I haven't had an instructor request HDMI yet. I know that is coming in the future though. Will new projectors adjust between 4:3 and 16:9 depending on the resolution being sent to it?
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