Originally Posted by NGiovas
My supply registers will be in the front of the theater and the returns in the rear. My equipment rack will also be in the back corner of the theater. I may have had an earlier drawing showing the rack in the front, but after talking with bpape, he suggested I move it to the rear corner.
My preferred method would be to exhaust hot air to the outside, but this will be dependent on not compromising the sound control.
Based on your last drawing
, and the way you are describing venting to outside, I am assuming you are putting the equipment closet in the right rear (upper-right corner). The problem I see of pushing air outside, is you need to replace that displaced air in the house. Without using an external supply, you must draw that air from other cracks, crevices, furnace makeup-air duct, etc. If you can move slide your entry door towards the front row to give space in the back left corner, you could then draw air from the basement into the closet and expel it back out into the basement. To reduce noise leakage, use the stud wall cavity to create a baffle (or maze) for the air to follow through the wall, instead of having the opening go straight through the wall. Yes, this might compromise the noise confinement more than the other corner, but it keeps the design very simple. Optionally, if you have the room to install 2 duct runs from the right rear corner back to the basement, you could do the same concept up there. However, you will be pushing/pulling the air much further, which could require a larger fan/motor.
Another advantage I see of the rear left corner, is the equipment is immediately accessible as soon as you enter the room, without having to rely on a remote for everything, or crossing the entire width of the room to manually set something.
As for quiet fans, I am using a Broan inline (Grainger part #4TR54), which are relatively quiet "squirrel cage" designs. Is is mounted in a soffit/bulkhead outside the theater, packed in batt insulation. This is a 300CFM fan for an 8" duct. I split the incoming line into two 6" ducts, and use one to cool my CRT PJ, and the second to draw air out of the equipment closet. Grainger is a good supplier of all kinds of fun things. For Broan Inline models, look here
. Options run from 100CFM all the way up to 1500CFM. Prices look to be about 50% more than they were 8 years ago, but such is life, as you noticed with the copper wire.