CurtPalme.com Home Theater Forum

[RobertMfromLI]

Hey all, I am considering building a not quite hush box for our BG800. We are planning a frame/scaffolding assembly for it and want to enclose the PJ in it (we use the thing outdoors - at least for now).

I've seen this topic:
http://www.curtpalme.com/Hushbox1.shtm

But, on the BG800, obviously noise is not an issue - the box is intended solely to protect it from whatever the wind may blow onto/into it (pollen from the trees, bugs, whatever), and wanted to know if anyone had any ideas on where and how much venting we could/should use, etc. We are currently thinking of making a fully (except bottom) enclosed case - with the bottom being made of a stainless steel plate with holes/square cutouts for venting (and of course, an opening for the lenses). It seems most of the venting on this model is done through the bottom - would that be a good guess?

The next question is, can someone recommend a plastic or glass that would be appropriate to put in front of the lenses? I've seen various movie theaters where they have one enclosing the PJ booth and the theater proper. I've found some low reflectivity plexi on the market but am not sure how that affects the light going through it (and at it's cost, dont want to play with it to find out - if we waste money on anything, we'd prefer it be this: Stewart AllRise Screen).

Thanks,
Rob

[CIR Engineering]

I haven't seen this done on the forum before. For glass, you should use optical grade glass. Everything else you will have to invent

craigr

[ecrabb]

Rob,

Sometimes the best solution is the simplest... Why mess with expensive glass that's going to get dirty, have to mounted at the correct, angle, etc...?

Build yourself a simple painted plywood box to put the projector inside that has a couple of removable panels - one at each end. You could even put them on small hinges so when the doors are open, they create an "awning" for the lenses and intake/exhaust. Make the box a little oversized, and include some screened venting on the bottom. When you're watching, it's nice out - no need to worry about the elements. When you're not, it's all closed up. Bada bing!

SC

[RobertMfromLI]

Craig and SC,

Thanks for the tips - both sound like great methods. Will post pics and such when we get to this project.

Thanks,
Rob

[jkruger]

Wrap a big plastic bag around it when not in use.

[Kiev Savoie]

I used to put saran wrap tightly over my lenses and held in place with rubberbands to keep the dust off of them. my thinking is that it's so thin it can't interfere with the image much. i never noticed much of a difference, but you might want to see for yourself, just stretch a piece of it over a rectangular frame that will fit all three lenses. it won't be very tough but it's airtight and easy to replace.