Behind false walls. (behind the screen) - AVS Forum
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post #1 of 8 Old 03-22-2009, 06:44 PM - Thread Starter
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I finished up my soffits but am wondering about one thing. You can see that the area behind the front soffit is open now. This area will eventually be behind a false wall. My question is about the ceiling. I would there be any advantage to leaving the rear area with the higher ceiling, or can I just continue the soffit to the back wall?


Also, I was wondering about when I build my stage, if I could just build it in front of the false wall. Not continue it all the way behind the screen.



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post #2 of 8 Old 03-22-2009, 06:50 PM
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I don't have an answer to the ceiling question, but I didn't build my stage past the end of the false wall. Seems to be working out ok for me so far.


My build thread:
The Maple Street Theater
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post #3 of 8 Old 03-22-2009, 07:29 PM
 
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Quote:
Originally Posted by Jailguy View Post

I finished up my soffits but am wondering about one thing. You can see that the area behind the front soffit is open now. This area will eventually be behind a false wall. My question is about the ceiling. I would there be any advantage to leaving the rear area with the higher ceiling, or can I just continue the soffit to the back wall?

It can go both ways but check your local code. It is better to leave the ceiling area open if possible so as long as isolation in not a concern. This will allow better bass traping up there if you plan on it. Usually that gets drywall or other types of ceiling installations instead of leaving it open.

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Also, I was wondering about when I build my stage, if I could just build it in front of the false wall. Not continue it all the way behind the screen.

It doesn't need to go behind the screen, and it can help if it doesn't sometimes. If it does, remember to decouple it of course. If you double up on the layers of your stage that will help.
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post #4 of 8 Old 03-22-2009, 07:35 PM - Thread Starter
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Quote:
Originally Posted by SteveMo View Post

Usually that gets drywall or other types of ceiling installations instead of leaving it open.




I plan on DD/GG/W-clip up there. It is just weather I should leave that extra ~36cu ft open, or close it off.
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post #5 of 8 Old 03-22-2009, 10:50 PM
 
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Originally Posted by Jailguy View Post

I plan on DD/GG/W-clip up there. It is just weather I should leave that extra ~36cu ft open, or close it off.

Close it off then. The less places for sound to leak away into, the better.
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post #6 of 8 Old 03-23-2009, 02:14 PM - Thread Starter
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Couldn't I build a large bass trap up there. What would be the best way to build it. It is 11ft x 3ft x 1ft.
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post #7 of 8 Old 03-23-2009, 07:06 PM
 
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Couldn't I build a large bass trap up there. What would be the best way to build it. It is 11ft x 3ft x 1ft.

Desguise it as a proscenium and fill it with mineral wool.
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post #8 of 8 Old 06-11-2009, 03:55 PM - Thread Starter
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OK, so I just made a real quick sketchup of what I'm talking about. I plan on using one or two 18" sonotubes. Does it matter that the subs will be "below" the stage sitting on the carpet covered carpet? If I did this I wouldn't have to filled with sand. Would it be best to fill it with mineral wool or something similar and open up the back to make it a broadband bass trap? If this is the case is there an idea depth the stage should be? OR Should I forget the whole thing and make the stage like most people and fill with sand.

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