Superlow frequency subwoofer

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  • soiset
    soiset Posts: 724
    edited March 2007
    There can be quite a bit of extremely low freq info on dvd, and I can only imagine that with hd-dvd, and the improvements in movie sound, their will be more such effects in the future.
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  • soiset
    soiset Posts: 724
    edited March 2007
    GV#27 wrote:
    Madmax is right you would not need deep bass response for music (other than pipe organ)but some movie soundtracks like War of the Worlds that contain <20hz material that if your woofers can cleanly reproduce will add some serious impact to the those scenes.

    Yeah, for music, only pipe organ and maybe cannon fire require the capacity for low freqs; for that I have my two-channel rig, which is supplemented with a Velodyne ULD-15. This mega-sub is just for HT.
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  • dave shepard
    dave shepard Posts: 1,334
    edited March 2007
    soiset wrote:
    That forum is great. There are folks there doing almost exactly what I want to do, and getting the results I'm after. I really appreciate the tip.


    When visiting the Home Theater Shack call on Ed Mullen "Dr. Spec" he can answer all and any questions you have with facts that will leave most scratching their heads, also tell him I said hi..

    Dave
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  • Deadof_knight
    Deadof_knight Posts: 980
    edited March 2007
    Ok soiset what is the point of going that low ? your pushing air really below roughly 18 hertz. Im just asking not trying to rib you or anything, The human ear doesnt hear that low correct ?
    :cool: " He who dies with the most equipment wins Right ? "

    Denon 3300 Adcom 535 BBe w/sub out 1 pr 4.6s 2 pr of 4 jrs Recent additions Samsung Lns-4095D LCD, Samsung hd-960 DVD, Monster HT-5000 Power center    ,HPSA-1000 18" sealed DiY home sub.:D
    Black Laquer 1.2tl's w/ upgraded x-overs and Tweets BI-Amped with 2 Carver tfm-35's Knukonceptz 10ga cables
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  • goingganzo
    goingganzo Posts: 2,793
    edited March 2007
    i would go with the sound sploter my curent setup of 4 avalanch 18 will hit 120db@10 hz with 1000 wats aplyed
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  • jdhdiggs
    jdhdiggs Posts: 4,305
    edited March 2007
    Watch out on your amp. Most drop their output like a rock below about 18Hz so getting to 10, you'll need to check the amps profiles. Also, I think you are looking at the Fs for reading how low a driver will go. That's not true, that's just the resonance frequency of the driver. It can play above and below that frequency, however it does get sloppy at and below this rating. You can kill it's efficiency and lower the number by adding mass to the driver.

    The things I would look for most in your configuration is Qts and Displacement. Nothing else really matters in what you are looking to do.

    Also, download WinISD and play around with it.

    Gonzo: With your alignment @ 1000W aren't you bottoming out the drivers? I'd think you'd bottom those beasts at around 300W in the IB setup you have.
    There is no genuine justice in any scheme of feeding and coddling the loafer whose only ponderable energies are devoted wholly to reproduction. Nine-tenths of the rights he bellows for are really privileges and he does nothing to deserve them. We not only acquired a vast population of morons, we have inculcated all morons, old or young, with the doctrine that the decent and industrious people of the country are bound to support them for all time.-Menkin
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