LED Projector in Hall???????

[ba9ag]

One of my schools wants to install a new AV solution in the school hall. We have all of our quotes in and one of the three companies has quoted for a Casio 2500 Lumens LED projector. The hall is a particularly bright one with high level windows all around. The other quotes have been for conventional 4000 lumens projectors.

 

Is it just me or is 2500 lumens a bit lightweight?

[Haptic]

Hi Ba9ag,

 

If you would like a comparison quote be sure to ping me over a quick email

 

[email protected]

Edited June 14, 2012 by Dos_Box

[pscott]

Ask them to bring the projector in and show you it in place as you doubt the suitability of the quote

[localzuk]

We have a hall which can hold about 300 kids, is fairly dark and a 3500 lumen projector only just works ok in there. 2500 will more than likely be far too weak.

[ba9ag]

We have a hall which can hold about 300 kids, is fairly dark and a 3500 lumen projector only just works ok in there. 2500 will more than likely be far too weak.

 

That's what I was thinking. I've contacted the company and they don't have a projector available to do a demo.

 

Has anyone actually got one of these projectors? If so, what do you think of them?

[adampat84]

We have the casio XJ-A140 2500 lumen projector in our hall.. you''ll need something brighter!!

 

Its okay but can struggle a bit on bright days (I.E. today!!)

[Busybub]

Can you turn off the lights at that end? Got any curtains or blinds?

 

If not, sounds like you're going to run into problems. If the light falls onto the wall you are projecting it on, 4000 probably won't be enough

[ba9ag]

Can you turn off the lights at that end? Got any curtains or blinds?

 

If not, sounds like you're going to run into problems. If the light falls onto the wall you are projecting it on, 4000 probably won't be enough

 

The light doesn't shine onto the projected wall and we do have curtains all around the hall but when we initially discussed this solution the Head expressed a desire to not have to go around closing all of the curtains every time we wanted to use it. I think it would be ok if we had to close only a couple of curtains but there are 26 curtains in the hall and it would be a bit of a mission to close and open them every time.

[ba9ag]

Hi Ba9ag,

 

If you would like a comparison quote be sure to ping me over a quick email

 

e-mail in the post

Edited June 14, 2012 by Dos_Box

[soveryapt]

Generally for "professional applications" (which as far as I'm concerned, hall usage comes under that) you want to be looking at 4000 Lumens + with a high contrast ratio to allow cleared differentiation between the dark and light colours on the screen too.

 

Contrast ratio is something that a lot of people don't know about being an important part of choosing a projector.

[ba9ag]

Anyone else got an opinion on this?

[Tyiell]

We have a 4000 Lumens HP CP-X605 Projector in our hall. At a push we can get the whole school in the hall (1500 students). The projector does the job ok, but I wouldn't want to go any dimmer than that - I wouldn't say no to one of those new Casio Laser Projectors in there (it is a royal PITA to swap a buld out up there), but there's no chance of spending money of flash stuff like that at the moment!!

[plexer]

3000 lumens NEC VT770 in ours works fine but on really bright days we can close the curtains too.

 

Ben

[Educare_AV]

What size is the screen you are going to be projecting onto? Did the companies who surveyed take any light readings with a light reader? If so do you have the results from this?

[Marc-Engineer]

You are pushing it, you need around 200 lumens at the screen and you wont get it if your screen is bigger than about 75" with that projector, also they are not good for a hall as you usually mount higher than classrooms so you have to think of servicing it and changing lamps, you need a better class of projector altogether, min 3500 lumens at projector will give you around 200 lumens to a 105" screen, again many makes available but i have done far less repairs on Epson than any other make.

Casio....hmmmm remeber their watches, most other makers are briging better soloutions out also LED if you want to go that route, but i would not recomend LED at this time, they actually have no benifit.

 

Marc

Projector Engineer

[localzuk]

Casio....hmmmm remeber their watches, most other makers are briging better soloutions out also LED if you want to go that route, but i would not recomend LED at this time, they actually have no benifit.

 

What? Ok, in a hall situation they're not bright enough, but saying they have no benefit when they require no replacement lamps and require no filter cleaning, is a little odd?!

[DarrenC]

One thing no one has mentioned is budget.

 

Are the company trying to offer you the casio on a cost saving basis (this would be a little odd as other 2500 lumens projectors would be cheaper) but as localzuk said the running costs with no bulbs would bring down your total cost of ownership.

 

I would have thought that you would really need at least a decent 4000 lumen model, depending on budget and the space you are using it in I woud recommend going a bit higher if possible. Just remember generally these larger projectors have more expensive bulbs so make sure to take that into account when working out your budget.

 

As for the comments on the casio, although there are other LED projectors due out on the market the only one with any definite time scale is the new samsung model (I'm hopefully gettng my hands on one this week will post my thoughts) and that is no where near the spec of the casios.