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Thread: What is the best acoustic material to place on the floor?

  1. #31
    Addicted to Best! Bobvin's Avatar
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    Jun 2014
    Redland, Oregon
    Quote Originally Posted by Ron Resnick View Post
    Won't those layers result in a height of over an inch? What specifically is Bonnie trying to accomplish with those products together?

    Sound not escaping your listening room? Wideband frequency absorption? What else?

    Which product serves which objective?
    Vibramat is 7/16", carpet is 3/8", so under an inch. The Lumitex thickness is not really material at .35mm.

    Full write-up of the acoustic solution will be provided after completion—I spoke with Bonnie a couple days ago with some of the same questions you asked. The floor in my space would be like Steve's room (though I know his floor is structurally more robust) as mine is joists over crawlspace. Rather than mischaracterize the floor treatment, I'll wait for Bonnie's write-up. Her crew will be here to install wall treatments week of Jan 9th, carpet install the following week. I am close to being able to put my room back together.

    I'll copy these last couple posts to my room thread so as not to further hijack this one.
    —Bob Vineyard, aka bobvin

    My system: Benz LPS, Einstein Turntables' Choice phono-pre (dual mono version), AMG v12 turntable, dCS Rossini DAC, Audio Research Ref10 pre, Audio Research REF 160M's, Wilson Alexia speakers. Transparent Ref MM2 & Gen5 signal cables, Shunyata Zitron Sigma, AlphaNR, Python, Anaconda, Cobra power cables. Shunyata Hydra Triton v3, Denali 2000t, Stillpoints. HRS. Acoustic environment optimized by Dr. Bonnie Schnitta of SoundSense.

  2. #32
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    Feb 2012
    G'day maties,

    Bonzo over here, introduced me to Auralex- acoustic treatment solutions- superb products! They are remarkable and cost far less than anything I have come across. Not too sure whether they would do large coverings for acoustic treatment but with a few Auralex pads under each component, including speakers and all gear where it is critical, will do a fine job just well enough without having to go through extensive floor mods and carpet work, in my opinion.

    Just my 50cts, and I plan to get Auralex for all components now including the fish tank! After all, the fishies must swim with no good vibrations coming from the active bass in the Ethos... The Auralex is a remarkable product! I would contact them for special custom orders just to see if they would oblige or at least advise otherwise...
    Cheers, RJ

  3. #33
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    Dec 2010
    Big fan of Auralex, which we use under the Subwoofer...their big Gramma.

    Meanwhile, here is what we used under our floorboards. Not an acoustician thing, but apparently more standard for general floorboard construction. Still seemed to have noise insulation properties. It is 5mm thick. Vibramat comes in 3mm, 5mm, 7mm and 10mm thickness...this is for installation under floating timber floorboards (which is what we've got).

    "Natura Sonic Gold acoustic underlay offers exceptional performance for comfort, support, and acoustic reduction, over 24db. This product also offers excellent thermal insulation properties making it ideal for underfloor heating systems.

    Made with non-toxic and non-dusting materials this underlay will effectively even out minor floor imperfections.

    A gold foil vapour barrier with a 200mm over lap acts as an excellent DPM (damp proof membrane) to protect your floor for moisture attached to a 65kg/m3 high density foam core with high compressive and recovery strength.

    Product Summary:
    Approx. Density (kg/m3) 65
    Approx. PE Foam Roll Weight (g/m2) 353.16g
    Thermal Conductivity ( W/mK) 0.048
    Sound Reduction (dB) >24dB"
    Speaker: Wilson X1 + Velodyne DD18+
    Source: Zanden 4Box Digital
    Amp: CJ GAT2 + Gryphon Colosseum
    Cable: TA Opus Gen5&MM2 + PAD 25th Sablon GCUber
    Isolation Sandwiches: Under: HRS.Stillpoints.Auralex Top: HRS.Artesania.Entreq.EAT.90kg Mass Damp
    Power/Ground/Shield: 7 + 16A Furutech . Burmester948 . NordostQX4 / Tripoint Troy Sig+Thor . Entreq Atlantis / Receivus/Everest/Wrap
    Room/Tube: Stillpoints Apertures / Amperex.Mullard
    Headphone: Sennheiser 650 . Arcam rHead . ApogeeGroove

  4. #34
    Addicted to Best! sbo6's Avatar
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    May 2014
    Round Rock, TX
    Absorption is the most common recommendation. The primary reason for this is it's usually the closest first reflection. Sidewalls are usually further away.

  5. #35
    VIP/Donor [VIP/Donor] andromedaaudio's Avatar
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    Jan 2011
    Amsterdam holland
    Sheepskins and carpets , the shirdaks are made from sheepswoolvelt , absorbs beautifull in a natural way
    For absorbing bass freq im gonna buy some bass traps probably

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