I'm working in the theater all week, so I'm getting a lot done - electrical, low voltage, stage framing, etc. I've had a few details come up that I wasn't sure about, and I need to get some feedback before I close in the soffits and riser with provisions included. I ordered step lights from Amazon. I went with the 7W incadescents
that BIG has recommended before. The product description says that for only $10, they include both the vertical and horizontal louvered face plates. I'll paint them to blend in with the carpet - probably black. 4 lamps at 7W each should make the GE happy, so I hope I'm good there without adding the resisters or extra lights that we discussed a few months ago.
The more complicated issue needs some feedback, but it is in the wheelhouse of a few of you - so let's see those chops you guys have!
I'm ducting exhaust for a projector hush box. There is room for a small flex duct to empty into the top of the equipment closet, or even out the face of it into the adjacent space at the bottom of the stairwell. Here's the general layout I'm considering:
That box is modeled at 30" square, by 11" tall. I think that should give me the height I need to allow the projector to be ceiling mounted and still allow the hush box to fit around it. I used dimensions from a JVC DLA-X55, Sony VPL-HW50ES, and a Panasonic PT-AE8000 and just took the largest of each of them for each dimension. Any of them should fit I think, as long as the height is okay - the tallest is only 7", and I think a low profile ceiling mount shouldn't need more than 4" more. But if anyone disagrees, please say.
I'll connect a 4" flex duct to the back, inside a soffit extension, and route it through the wall, where it will meet a small fan. A 100mm computer case fan is basically the same size as 4" duct, so I think I can work out a reasonable connection for them. This fan
is very quiet and very cheap, and moves up to 36 CFM with 60mA of 12V power. Unless I'm wrong, that means I can power it directly from the 12V trigger of a projector - the JVCs and Panasonics are both listed at 100mA 12V trigger.
So two main questions: 1) am I reading the electrical specs right and setting this up to actually do what I want it to do? and 2) does this have a chance of drawing in enough room air and exhausting it at a rate that will keep a projector cool?