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Under Ground Theater


bobc910

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I am a big fan of more subwoofers. I want strong, not loud. Too many stuffs to buy so might not be able to start with more than 4. I am sure I can always add more down the road. We will be working on the interior design when we get a little closer to framing the house. Definitely no bare concrete floor and wall. It needs to look like a theater, not jail.:D

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The number is from my own expierence and from some of the work in the ULF thread on AVS.  I didn't need bigger and more subs til I moved the HT from upstair to down in the basement. In the ULF thread various systems were tested on a suspended floor and also on concrete.  It is much harder to get good tactile response sitting on concrete compared to a wood floor upstairs.  Also, in a lot of basement, a drop ceiling is used which also acts as a bass trap.      This is one of the reason for using risers for the seating in dedicated HT. 

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On 9/10/2016 at 9:19 AM, derrickdj1 said:

The number is from my own expierence and from some of the work in the ULF thread on AVS.  I didn't need bigger and more subs til I moved the HT from upstair to down in the basement. In the ULF thread various systems were tested on a suspended floor and also on concrete.  It is much harder to get good tactile response sitting on concrete compared to a wood floor upstairs.  Also, in a lot of basement, a drop ceiling is used which also acts as a bass trap.      This is one of the reason for using risers for the seating in dedicated HT. 

 

I've read somewhere that supposedly the official explanation is that concrete doesn't actually kill the sound, but at the same time, it doesn't add to the bass.  With wood and drywall, it flexes just enough to actually reinforce the sound.  Concrete, you get nothing, but that doesn't mean it's soaking up bass like a sponge.  

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For tactile response(TR) you need a surface that resonates.  In our homes, concrete has the poorest resonance properties.  It can help to contain the sound and also reinforce some bass in the room.  Boundary gain is affected by wall, ceiling and floor construction.  I will blow my system up before I piss off the neighbors.

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We are going with 2 rows of seats. Either row of 3 or row of 4 seats. Of course, we want to max out on the screen because L,R,C, and some subwoofers will be behind the screen. If I have room in the budget for more subwoofers, they will go on both side of the wall. Surrounds will be mounted on the wall and ceiling.

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