question about base extension

drew spelts
drew spelts Posts: 310
edited November 2005 in Subwoofer Hookup & Bass Management
My question is, how deep of a frequency can a sub go down to in a small room? The lower the frequency the longer the wave, if the length of the room is less than half a wave length long then there is a chance it will be completely negated and unable to be heard or felt for that matter. I am trying to figure out how lo is possible in a 15X15X9 room. This way I can decide on how to approach the whole sub thing as to building my own or buying one. Thanks Drew
Harman Kardon AVR635
RTi10's Up Front
CSi5 Center
RTi6's Rear Surround
Furman RA-1210:rolleyes:
Post edited by drew spelts on
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  • VR3
    VR3 Posts: 28,644
    edited November 2005
    Get one that can go down to 20hz...

    start here...

    www.svsubwoofers.com
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • aaharvel
    aaharvel Posts: 4,489
    edited November 2005
    drew spelts wrote:
    My question is, how deep of a frequency can a sub go down to in a small room? The lower the frequency the longer the wave, if the length of the room is less than half a wave length long then there is a chance it will be completely negated and unable to be heard or felt for that matter. I am trying to figure out how lo is possible in a 15X15X9 room. This way I can decide on how to approach the whole sub thing as to building my own or buying one. Thanks Drew

    Impossible to answer.

    What is the size & quality of the cone, quality of the amp pushing it, the enclosure?

    Is the room acoustically dead or live?
    Where's the listener in all of this?
    Where's the sub in all of this?
    Where in the room (if any) are the bass traps?

    you get the jist.



    For a 15x19' room, i'd go with a 10" or above, and from a manufacturer that KNOWS how to make a good sub that's musically accurate. Any decent sub can put out monotone LFE from movies, a great sub can handle musical low notes with consistent accuracy. Check HSU, Velodyne, and the darling of this thread: SVS.

    Good luck and welcome to the forums.
    H/K Signature 2.1+235
    Jungson MagicBoat II
    Revel Performa M-20
    Velodyne cht-10 sub
    Rega P1 Turntable

    "People working at Polk Audio must sit around the office and just laugh their balls off reading many of these comments." -Lush
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  • goingganzo
    goingganzo Posts: 2,793
    edited November 2005
    if you have enough subs you can do anything i bet i can hit 120+db @10-12 hz with my sub death by bass
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  • jmierzur
    jmierzur Posts: 489
    edited November 2005
    drew spelts wrote:
    My question is, how deep of a frequency can a sub go down to in a small room? The lower the frequency the longer the wave, if the length of the room is less than half a wave length long then there is a chance it will be completely negated and unable to be heard or felt for that matter. I am trying to figure out how lo is possible in a 15X15X9 room. This way I can decide on how to approach the whole sub thing as to building my own or buying one. Thanks Drew

    In my 15x13x8 room with SVS PC-Ultra's @ 16Hz tune and 10 bass traps, I get very clean output with a -3dB cut off at 12-13 Hz.
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