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Discussion Starter #1
I'm converting my living room into a dedicated home theater. The room is 18' x 13.5' and is directly above an unfinished basement, and has a wood floor which is the ceiling for the basement. I plan on carpeting the floor and doing the usual acoustic treatments, but I was wondering about the subs. Should I build something like ASC's subtraps, to decouple them from the floor and also to help with the vertical room mode?
 

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Sounds great. Are you asking with respect to sound staying in the room or regarding the quality of the sound remaining within the room?
 

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Discussion Starter #3
All I'm concerned about is obtaining the best possible sound in the room. I live in the country and I'm single, so sound escaping isn't a problem. I was thinking that running a pair of THX Ultra subs in a room constructed this way might equate to a a whole lot of movin and shakein goin on.
 

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I wonder what sort of construction might help you in that respect. A structure built with a resonance point of 50Hz might be a fun ride.

That would start a little structural roller coaster starting at 65Hz down to 35Hz.
 

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I think the carpet will definitley help and it might be enough. I would set them up and run the system before getting too worried. If you find that after a sound test you need to do something else you could use something like a subdude by auralex.http://www.google.com/aclk?sa=l&ai=CgTHjXqtHStfPBt2Ktgfu2KEvkre1GrqP6eIDypzM7wMIABACILZUKAJQlOuE7_j_____AWDJloSJhKTsD6ABytXq_gPIAQGqBBZP0N9VQ3HYvAWtWFwaCrfk3--IbIVS&sig=AGiWqtxyw3k3mrvm2RXCUDC9yOGdO1ULuw&q=http://truesoundcontrol.com/products/SUBDUDE.html
 

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Discussion Starter #6
The SubDude might be just the ticket, and I am considering that as an option. I read a test report on the ASC subtrap that said that it was very useful, when you had wooden flooring over an open space ( sounds familiar ). The reviewer stated that this flooring arrangement is quite suseptible to flexing, vibration transmission, and self noise ( whatever that means ). Also that it would help with the vertical axial mode, usually at 70 Hz with an 8' ceiling. I'm usually not a DIY kind of guy, but it doesn't appear that it would be to hard to build a combo isolation platform and bass trap.
 
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