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Discussion Starter · #1 ·
I'm thinking of building a screen for my CRT projector. My

idea is to make it out of solid chipboard as I can get a

laminated white piece with only a slight texture, which has

a slightly shiny surface. From what I've read, a flat white

wall has a gain of around one, so would a gain of about

1.2 be realistic from a slightly shiny white surface? I'll be

using a black felt surround to mask the edges and block

the annoying AKB line from my projector.

Does this sound like a reasonable idea, or would it be

better to go for a frame with a fabric screen? Thanks.


Mike
 

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It sounds like it could be well beyond a gain of 1.2 It doesn't take much diff in luminosity to make this difference....I would test it out before you mount it, buy it, etc....or just keep the reciept. Do a test on AVIA with the black and white needle pulses....If your current pj adjustments go way out of wack, then It could be a sign that it's not the right material. OR just look at some of your feature dvd's and play around with it...you just might like the hell out of it!
 

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Discussion Starter · #3 ·
As it turns out, it is quite a high gain. My crt is only 110 lumens

and I'm getting a pretty bright roughly 80" dia image. The only

downfall is there is a lit bit of hot spotting, which is a little

irritating. Not sure if I'll keep it or not yet.


Mike.
 
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