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Discussion Starter · #1 ·
Possible new idea for a DIY screen - AND/OR can you have TOO much gain?


In an effort to show out-of-town family members (who were visiting for Thanksgiving) my recently purchased (first projector- an) NEC PG6200, I quickly/temporarily slapped up my sheet of Parkland plastics - ripples and all. (Yes, alignment, convergence and especially focus were a real "female dog" under those circumstances, and we had to settle for a "rough-in" as opposed to a no-holds-barred pristine calibration, but nevertheless, all guests were duly impressed.)


Anyway... "Grandma" suggested stretching a white satin sheet (king-sized, flat, of course) over a wooden frame and hanging that as a screen. If I'd had such bed linens, I'd have tried that, but I did not.


But it does seem like a good idea to me; it would be nice and reflective.



But can you have TOO much gain?


Let me rephrase that... When you have a spouse that complains about "turning the living room into a cave every time you want to watch TV", can you have too much gain?


Would higher gain allow me to get a decent picture with higher ambient light levels?


Would I need to back it with blackout cloth to make sure no light passes *through*?


If not, I wonder if a satin sheet would be acoustically transparent enough to place the center channel speaker behind the screen?


Has anyone tried this? Or a similar highly-reflective fabric?


Is this a bad idea?
 

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Would higher gain allow me to get a decent picture with higher ambient light levels?


Yes, but quality still dives quickly as the light level increases. I've got a 6PG also and on my ~1.5 gain screen you can watch with the indirect lights on somewhat. Black level suffers of course but bright stuff is watchable.


Would I need to back it with blackout cloth to make sure no light passes *through*?


May as well forget the bedsheet and use the blackout as the real base :) 2 coats of gesso and you'll be laughing.


With a sheet you'll probably get muffled sound and good reflectivity OR good sound transmission and lousy reflection. I don't see that working well.
 

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I loved what I read recently - a mirror has great reflectivity, but the hotspotting is horrible! :)


I would *think* that satin's sheen would create bad hotspotting.
 
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