Subwoofer on carpeted floor...is there anything else I can do?

Discussion in 'Archived Threads 2001-2004' started by Stephen Orr, Jan 2, 2002.

  1. Stephen Orr

    Stephen Orr Screenwriter

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    Our entire downstairs is carpeted with the exception of the dining room and kitchen. Right now, I have my subwoofer located directly under the right front satellite speaker in a corner with an outside wall. It is sitting on carpet. It sounds great, but is there anything else I can do to maximize its performance, like putting a board under it or something. Relocating it to another part of the living room really isn't an option.

    Thanks in advance...
     
  2. Mike LS

    Mike LS Supporting Actor

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    Some folks opt to put a marble (or some kind of stone) slab under their sub.
     
  3. Cees Alons

    Cees Alons Moderator
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    To be honest: no! Your sub should sound great and the carpet won't change that. On the contrary, I would say, less chance of standing waves between ceiling and floor.

    Some people like to feel their subs resonating on the wooden floor. For those (and if there's a distance requirement - e.g. if it's a downwards radiating sub), there are carpet-piercing spikes. Won't damage the carpet too seriously, but may scratch the wooden floor beneath it. Useless on concrete floors, damaging on expensive parquet.

    Cees
     
  4. Jim_Stu

    Jim_Stu Stunt Coordinator

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    Stephen,
    Is the sub:
    1) A 'bottom firing' unit.
    2) A 'side firing' unit.
    Translation - Which way is the big, bad wolf pointed?
    If its a 'bottom firing' unit, lay it on its side, point
    it toward the corner, and check it out. Another, option
    for 'bottom firing' units is place a piece of counter top
    material under them.
    NOTE: I would not bother to do any of this unless you can
    validate an improvement with some good data from a SLP meter and Avia DVD.
    http://www.sonicdesign.se/subplace.html
    JRS
     
  5. JerryW

    JerryW Supporting Actor

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    You can try putting a marble slab or patio stone under it, or install some carpet spikes and couple it to your floor. I did both and it made a pretty dramatic improvement.
    Of course, the slab only helps if your sub is of the down-firing variety.
     
  6. Gregg Loewen

    Gregg Loewen Video Standards Instructor, THX Ltd.
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    1. Get it as close to the corner as possible

    2. Place it on a solid slab of concrete or marble type of stone

    3. If the port is on the bottom, place a oil type of funnel under the port, this will direct the air away from the floor and into the room.

    Gregg
     
  7. DanaA

    DanaA Screenwriter

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    I have to agree with those suggesting trying out a piece of slab underneath. I'm on these boards because I'm undergoing a complete make-over in my bedroom HT. Every day here, I learn many, many new things. Two or three days ago, I heard the slab idea and went to Home Depot and bought a 14 by 14" piece of ceramic tile and, because the change over was so immediate, I did notice a significant difference in the subs performance. These people really know what they're talking about.
     
  8. Stephen Orr

    Stephen Orr Screenwriter

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    It's side-firing. The controls are on back, the "grill" on the front.
     
  9. Jeremy Anderson

    Jeremy Anderson Screenwriter

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    I have a front-firing sub (Polk PSW350), and I tried the patio stone thing just for kicks... and got a 2db increase in output just by putting the patio stone under it (14"x14"x2" slab from Home Depot). I also put a smaller slab on top of the sub (12"x12"x2"), and that made it noticably tighter-sounding for music. At first I thought perhaps I was perceiving a difference just because I thought I should, so I removed the stones and replaced them several times to verify it. Hell, for less than $5, it's worth a try!
     

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