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Topic: work Projector help
Joined: Feb 23, 2007
Posts: 7
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Hello everyone.

I have been tasked in finding two projectors to use for my school Union. Once a year they will be used in a large conference room with maybe 600 people. This would be roughly for an hour with just have a spreadsheet on it and possible some images in a screen shot. Otherwise one will be used in a small room. The projectors we are currently using is a Dell 2200MP but they are not an option to use for us any longer.

It is not going to be used for movies.. I will also have to pick up two portable screens to be used.

I am thinking short throw projector will be best and probably something in a 4:3 would work. Do not want to break the bank on a projector.

We have one of these projector screens already so I thought about picking up a second one.

VIVO 100" Portable Indoor Outdoor Projector Screen, 100 Inch Diagonal Projection HD 4:3 Projection Pull Up Foldable Stand Tripod

Anyone have an ideas on what would work best.
Joined: Mar 28, 2005
Posts: 12,303
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I am not sure how important the data is, but the screen size you are talking about is typical for a standard classroom or conference room and entirely too small for a larger auditorium setup.

I realize this is for limited use, but I almost lean towards the rental/used market for this setup considering how rarely it is put into use. But, 600 people, if they are paid, even at around $20/hr., works out to their time being worth $12,000/hr while they are viewing the presentation. So, going 'inexpensive' and using a 'small' screen isn't something I would recommend if the data being presented is important and a key point of the purchase.

But, the lack of use beyond once a year is also a major factor.

Rentals offer both a larger screen which 600+ people can see and projectors which can cut through the light in the space.

The 4:3 aspect ratio died about 10 years ago with the end of the last CRT televisions and the move to HDTV. So, all new laptops and monitors sold are widescreen, most often 16:9 aspect ratio. If buying new, do NOT buy old technology, just get a new screen.

You can get two 120" screens for about $120 each, so $240.

With a 42 square foot screen you want no less than 3,500 lumens, and preferably 4,000+ lumens for optimal viewing results.

Ultra short throw projectors rarely get this bright, and are really designed around 80" interactive screens (at this point) for in-classroom use, not for presentations to a large crowd.

So, I would opt for a longer throw LCD model. Yes, you have to place it 10'+ from the screen, but it will be a more even picture and cost a good deal less than the competing ultra short throw models.

A model like this, will come close in terms of brightness and usability for that screen size...

Getting two of everything puts you in around $1,300.

To get a better image, you can increase resolution if you want, but really, it's about adding brightness.

This model adds both brightness and resolution to the equation...

This will put you closer to $3,000, but the 4,800 lumens will make a visible on-screen difference with higher impact.

The LCD models tend to be brighter, with more accurate color, than the DLP models at the similar price point.
AV Integrated - Theater, whole house audio, and technology consultation during the build and installation process in the Washington, DC metropolitan area.
Joined: Feb 23, 2007
Posts: 7
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Do you think a regular short throw and not an ultra would work as well? Just a little more information.

The 600 people are Educational staff just attending an opening day union meeting to discuss union business before we return to the school to start the school year. Usually the main image is just a picture of the financials of the union and a few bullet points which is why I was thinking a 4:3 but I also agree that buying old technology stinks. If we plan on keeping the projector 6+ years or so the 4:3 will be even more antiquated so I agree I need to look into the wide screen formats.

We originally wanted to broadcast wirelessly to the projectors from an iPad or laptop to the projectors but they just seemed laggy and unreliable compared to the wired connections.