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Go Back   Blu-ray Forum > Home Theater > Home Theater Construction


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Old 04-11-2009, 04:36 PM   #1
antron antron is offline
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Default Stage & raised seating

I need some help here. I just installed a 3'6" x 12' stage in my HT and put a couple of sheets of plywood on it. After jumping on it the bass ressonates like crazy. I need to deaden the sound. I'm also building up the back of the room for raised seating which will be 12' x 10'. I've seen some people pour sand in between the joists but was wondering if anyone else had some suggestions. Sand seems like a lot of work and Im not sure if that will cost too much. Please help!!

Thanks,

Antron

PS: check out my project -
https://www.blu-ray.com/community/ga...?member=antron
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Old 04-11-2009, 09:32 PM   #2
kingofgrills kingofgrills is offline
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Are you evaluating the bass with the room as it is in your final gallery picture? If so, things will deaden down one you install the carpet and finish the walls off. However, I would recommend stuffing the floor of the stage with acoustically deadening installation. I'm not sure about filling it with sand though - perhaps bagged sand with deadening installation on top of it would do the trick.

The project looks great though. I can't wait to see it completed. What program did you use for your CAD drawings? It looks handy.
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Old 04-11-2009, 10:57 PM   #3
Big Daddy Big Daddy is offline
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Quote:
Originally Posted by antron View Post
I need some help here. I just installed a 3'6" x 12' stage in my HT and put a couple of sheets of plywood on it. After jumping on it the bass ressonates like crazy. I need to deaden the sound. I'm also building up the back of the room for raised seating which will be 12' x 10'. I've seen some people pour sand in between the joists but was wondering if anyone else had some suggestions. Sand seems like a lot of work and Im not sure if that will cost too much. Please help!!

Thanks,

Antron

PS: check out my project -
https://www.blu-ray.com/community/ga...?member=antron
Sand works, but it is messy. You can also put a few old blankets or mattresses there under the plywood. Find cheap packaging foam or foam used for mattresses and burry them under the plywood. That will dampen the sound. If they are not fire retartand, get some fire retartand spray and treat the area with it. Don't forget to do the wiring under the plywood before you install it.

It also helps if you attach a heavy carpet to the plywood by glue.
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Old 04-11-2009, 11:08 PM   #4
Rob71 Rob71 is offline
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You definitely want to use something that fire retardant. I was involved in a remodel recently and the owner built a theater room off the back of the house. They used the blown insulation that was being used in the walls for the raised platform. I seriously need to start bringing my camera to work with me.
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Old 04-12-2009, 03:18 AM   #5
Big Daddy Big Daddy is offline
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I forgot to mention this before. You can go to Home Depot/Lowes and buy a couple of roles of FiberGlass Insulation and throw them down there to dampen the sound. Make sure, you wear saftey glass and safety mask.





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Old 04-14-2009, 01:08 AM   #6
antron antron is offline
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Thanks Big Daddy. I'm going to go with regular insulation. I figured the sand is too messy and I don't want to create a bunch of extra work.
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Old 04-14-2009, 01:10 AM   #7
antron antron is offline
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Thanks King. A I mentioned I'm going to go with regular insulation, likely the heavy batting sound insulation. Regarding the program I used to make my room it is called. Live Interior 3D. Basically you design it in a sketch then you can go into it in 3D and check it out. The best $70 I ever spent. I designed my entire house on it.
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Old 04-14-2009, 07:38 PM   #8
kingofgrills kingofgrills is offline
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Sweet Antron, thanks for the tip on the CAD program. I'll have to check it out.

For flame retardation I think stuffing your riser with sound deadening insulation is the right way to go. It shouldn't cost too much to do it, and it will make a big difference.
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Old 04-14-2009, 09:50 PM   #9
JJ JJ is offline
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Beta I'm fully aware that isn't fiberglass insulation, but that guy isn't wearing his safety mask and safety goggles!!!
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Old 04-14-2009, 11:31 PM   #10
Big Daddy Big Daddy is offline
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Quote:
Originally Posted by JJxiv1215 View Post
Beta I'm fully aware that isn't fiberglass insulation, but that guy isn't wearing his safety mask and safety goggles!!!
That is sound proofing foam. It is not as bad as fiberglass. However, we should always protect our eyes and lungs.
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