Sub with cellar below ....

Discussion in 'Subwoofers' started by jkharmer, Apr 26, 2007.

  1. jkharmer

    jkharmer
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    Hi there,

    Would a downward firing sub (e.g monolith DF) be a bad idea with a full height cellar underneath? or does this make no difference?

    Any help would be great.

    Thanks, James
     
  2. Helicon

    Helicon
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    It all depends how solid the floor is. Is it a wooden suspended floor or a concrete floor? They'll both make things sound different.
     
  3. jkharmer

    jkharmer
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    Seeing as you are also up at such a late time ....... (I am working / formuming ever now and then!)

    It is a suspended wooden floor, I wonder whether some sort of slab under the sub would help??

    James
     
  4. Helicon

    Helicon
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    If it's one of those flimsy suspended floors that bounce when you walk on it, a slab will definitely make a difference and should tighten things up. There are also isolation platforms to try like the Auralex ones, which i'm using on a suspended wooden floor :)
     
  5. Gregory

    Gregory
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    You could also make use of it directly by creating an Infinite Baffle sub in the cellar. Great sound (I'm told).

    Cheers

    Greg
     
  6. Nimby

    Nimby
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    Absolutely! No modern home is complete without a few holes in the floor. :)

    Examples in the IB Cult gallery:

    http://home.comcast.net/~infinitelybaffled/page2IB-Gallery.html

    I have a rather flimsy floor where my big downfiring SVS has been sitting for a couple of years. It is a raised platform which I inherited from the previous owner. I really couldn't hear any difference with (or without) a heavy slab underneath the sub. Slabs are cheap enough to be worth trying and discarding if you notice no difference. Try different material underneath the slab to improve isolation. (Carpet tiles, sponge, sandwiches, etc.)
     
  7. AngelEyes

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    My thoughts exactly, I wish I had a cellar, IBtastic :thumbsup:

    Adam
     
  8. Sawdust

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    I hope I'm not hijacking this thread but I have a question about IB subs.

    My setup is in the attic and I have loads of space at the eaves and mounting drivers in the walls would be a doddle. My question is whether a plasterboard wall is enough to isolate the rear sound from the listening room. I appreciate I would need to build something substantial to mount the drivers in and fit them to the joists but I'm concerned that the plasterboard won't provide enough isolation.

    Thanks
    Mike
     

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