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Down firing subwoofer on carpet on cement

Discussion in 'Speakers' started by MiguelAnderson, Apr 23, 2003.

  1. MiguelAnderson

    MiguelAnderson New Member

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    This is my first append on this site and I certainly appreciate any and all help in advance.

    I have a pretty basic home theater setup currently sans subwoofer. I'm starting to look for a subwoofer to round out the system. My completely unfounded and uneducated gut feel about subwoofers would be to look for down firing models because I believe that this would enhance the feeling of directionless audio... in other words, it seems to me like it would disperse better.

    However, my setup is in my basement. The floor is carpet on carpet pad on cement foundation. My assumption is that in that case I should specifically avoid a down firing subwoofer because the floor would just absorb the sound.

    I'm really just looking for confirmation that my assumptions are correct. Id rather find out that I'm an idiot now, than after I forked out the money for the wrong hardware.

    Thanks,
    Miguel.
     
  2. Edward J M

    Edward J M Well-Known Member

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    Miguel:

    I would have absolutely no qualms about using a downward firing subwoofer in a carpeted concrete floor application. The floor (carpeted or otherwise) will not "absorb" the bass soundwaves.

    Pick the sub that sounds best to you, and don't worry about whether it fires downward, forward, or upward.

    And there is nothing "idiotic" about your question - we all ask each other questions, we confirm each other's answers, and we collectively advance our knowledge base. That's the whole purpose of this forum.

    Regards,

    Ed
     
  3. James Zos

    James Zos Well-Known Member

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    I have a downword firing 12-inch KSW Klipsch sub (I now wish I had been smarter and done my homework and bought a better sub for the price.) Anyway, on the Klipsch forums, several posters suggested that if you have carpet, like I do, to put a large ceramic tile underneath the sub. I did so and remember hearing an improvement in the sound, but now I could not tell you whether this was merely the power of suggestion since it's been so long since I switched between carpet and the tile. One thing that is good about having the tile is I don't have to worry about the furniture spikes I attached to my sub's feet piercing the landlord's carpet. Someone said the spiked sub might "skitter" on the tile, but my sub is heavy enough that this doesn't happen.
     
  4. James Edward

    James Edward Well-Known Member

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    Miguel- Here is the bottom line: Which way the sub fires won't make much difference, but a concrete slab will never transmit the tactile feel like a wood floor. My only suggestion to you would be to get the biggest, baddest sub you can afford. I would also suggest that if you go with SVS or Hsu, get the lowest tuned sub you can. They seem to energize the air in the room, which is what you'll need, since the floor won't be vibrating at all.

    My HT is on a cement slab, and the bass just does not transmit as well as with a suspended wood floor. Friends with half the sub I have get a more tactile feel because their system is on a wood floor. But that's life, so just beware that you'll need a powerful sub to go with the concrete floor.

    The above comments apply to movies only; music alone might actually benefit from a tighter environment. I don't listen to music in my HT, so I don't know...
     
  5. MiguelAnderson

    MiguelAnderson New Member

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    Great... thanks everyone for the input...

    Miguel
     
  6. Phil Iturralde

    Phil Iturralde Well-Known Member

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