Damping for enclosure?

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  • PMazz
    Senior Member
    • May 2001
    • 861

    Damping for enclosure?

    TW, I was wondering if you ever got around to playing with that roofing material/sand mix? I have some drivers ready to go into some enclosures and thought I might give it a whirl if you thought it was worth it.

    Thanks,
    Pete
    Birth of a Media Center
  • ThomasW
    Moderator Emeritus
    • Aug 2000
    • 10934

    #2
    Pete

    I made one sealed M8a-MKIII box plain and one with a thick layer of the material. Doing a knuckle rap test the damped box has a more dead sound. But I can't really say that adding the material results in better performance. The performance of the two boxes sound the same. Now these designs have restricted LFE given the very small size of the box, so it will probably reqiure a sub or something similar to do a real test.

    The rubber roofing membrane is cheap ($15/gal), so is sand, you might want to experiment




    theAudioWorx
    Klone-Audio

    IB subwoofer FAQ page


    "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson

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    • PMazz
      Senior Member
      • May 2001
      • 861

      #3
      What was the brand name of the roofing stuff? If I remember, it was a latex based product.

      Pete
      Birth of a Media Center

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      • ThomasW
        Moderator Emeritus
        • Aug 2000
        • 10934

        #4
        Kool Coat. I bought it a Lowe's

        Recipe is put 2 coats on of the straight stuff. Then mix up an batch containing a ton of sand. Apply as many coats as you want. Then cover with 2 additional coats of the straight stuff to seal the sand in




        theAudioWorx
        Klone-Audio

        IB subwoofer FAQ page


        "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson

        Comment

        • David Meek
          Moderator Emeritus
          • Aug 2000
          • 8938

          #5
          Thomas,

          How much weight does this material add? A lot? Just curious.




          David - HTGuide flunky
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          • PMazz
            Senior Member
            • May 2001
            • 861

            #6
            Thanks Tom!

            Pete
            Birth of a Media Center

            Comment

            • ThomasW
              Moderator Emeritus
              • Aug 2000
              • 10934

              #7
              David

              Depends on the amount of sand added to the mix/the size of the cabinet/ and the thickness of the layer used. So I can't give you a exact number. Certainly several lbs to an 'average' sized cabinet




              theAudioWorx
              Klone-Audio

              IB subwoofer FAQ page


              "Complicated equipment and light reflectors and various other items of hardware are enough, to my mind, to prevent the birdie from coming out." ...... Henri Cartier-Bresson

              Comment

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