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Tips to Maximize Sound Isolation/Absorption

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  • Tips to Maximize Sound Isolation/Absorption

    Hello all,

    So, we now live in a condo high-rise. I was working on a project earlier that involved hammering small finishing nails into wooden frames, which were sitting on top of cardboard, on top of a wood sketch board, on top of carpet in an effort to muffle any noise. When I say earlier, I mean about 6:30pm on a freakin Saturday. Wouldn't you know it, we get a call from the concierge desk saying the people below us were complaining - after about 15 minutes of the intermittent hammering.

    This story leads me to the following question. What are some tips to MAXIMIZE sound absorption from both subwoofers and speakers. Given today's experience, we're a bit paranoid about setting up the stereo and upsetting the yuppie (I'm speculating) neighbors downstairs.

    I know this has been covered elsewhere, but two things: the AV123 forum is down, and I trust you guys more than those AVS guys. I'm not a complete newb either. First, I plan to get Auralex Subdudes for both subs (main and computer). I've heard that hockey pucks are effecting under tower speakers, so I may try to pick up some of those. The aforementioned project, ironically, involved wrapping fabric around wooden frames to hang on the wall behind the tv/stereo. I'm considering ordering some sound dampening foam from Parts Express and cutting it to size to fit in behind the fabric.

    What I'm looking for is confirmation that these are indeed good ideas; and second, any additional tips or experience. Anything unique or creative is appreciated, short of covering the whole floor in Dynamat. I figured this would be useful to other apartment dwellers out there as well. Some additional questions I have include:

    Does the type of sub make a big difference (ported vs sealed)?
    Would masonry/stone pavers or tiles be effective sound absorption under either speakers or subs?

    BTW, the carpet is only in the bedroom. We have an open unit with hardwood throughout the living/dining/office areas. Great.

    Thanks for the help gentlemen.


  • #2
    Sound absorbtion works mostly on reflection/reverberation and will have little benefit for your neighbors.

    Sound isolation basically requires an air tight space as well as preventing the sound from traveling through solid materials like wood floor joists. Good luck.


    • #3
      Thanks for the clarification. I did some additional research last night, and it appears I don't have a full understanding of the meaning of some of these terms. That helps.