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Stuffing Question

Discussion in 'Home Theater Projects' started by Tyson, Sep 22, 2003.

  1. Tyson

    Tyson Well-Known Member

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    When you stuff a sealed box with wool or fiberglass, does it have any other effect besides fooling the driver in to "seeing" a bigger box? IE, is efficiency or any other parameter effected by stuffing the box?
     
  2. ThomasW

    ThomasW Well-Known Member

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    Gees Tyson I can't you asking this.... [​IMG]

    It absorbs part of the rear wave converting it to heat (=frictional loss). Depending on the damping material used and the driver's passband, it absorbs the higher frequencies coming from the driver. Also depending on the passband it can decrease certain standing waves. And if too much of it is used, the efficiency drops.
     
  3. Tyson

    Tyson Well-Known Member

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    Hehe. How's the house coming? We'll have to get together again, I got some nice scotch to share :) (Balvenie Double Wood).

    The funny thing is I'm not using the stuffing for a subwoofer, but for a pair of headphones :) They have good drivers but poor/flimsy ear cup construction (hollow w/no acoustic treatment, and flimsy plastic), so I've re-inforced the cups and stuffed it with acoustically absorbent material. Made a nice improvement in sound, but it seems quieter overall, so thats why I was wondering about the effects on efficiency of stuffing an enclosuure behind a driver.
     
  4. JoeFish

    JoeFish Well-Known Member

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    mmmm Balvenie. [​IMG] If you like that, give The Macallan a try. The 12 is good, the 18 is exquisite.

    -Joe
     
  5. Tyson

    Tyson Well-Known Member

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    Got Macallans already, about 3/4th's already drank :) Also have Highland Park at the moment, good stuff too. Highland Park is more peaty than Balvenie (which is only slightly peaty), and Macallans (which is not peaty at all). My favorite peaty scotch has got to be Lagavulin (very nice, but not for neophytes :) )
     
  6. CarlDais

    CarlDais Well-Known Member

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    Try Oban 18 year is all we have in OKC.
    If you like Highland...Oban will please you.

    Have you ever given some single Malt Irish
    whiskey a try? There are even some very nice
    Peat smoked Single Malt Irish.... soooo much
    better thant he usual Bushmills or Jameson.
     

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