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Thread: Isolating speakers from suspended floor

  1. #1
    Join Date: Jul 2012

    Location: Benson, Oxfordshire

    Posts: 452
    I'm Alex.

    Default Isolating speakers from suspended floor

    Merry Christmas.

    Iíve recently moved house and seem to have an issue with my floor transmitting sound! Itís suspended wooden floorboards with an oak floor atop. The floor seems to be sucking out the bass in my living room where the speakers are, if I go into the next room I then hear the bass. This makes me think my new neighbours will be quite displeased.

    Iíve checked out the quite impressive looking Townshend platforms but am wondering if thereís anything at the - just bought a house so broke - end of market for me to experiment with?

    Speakers are B&W 805N with the dedicated B&W (no spikes) stands.

  2. #2
    Join Date: Feb 2014

    Location: Huntingdonshire

    Posts: 1,413
    I'm Andrew.

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    Grab a pair of slabs from a local garden type place for a quick fix/experiment and stand the speaks on they.

  3. #3
    Join Date: Oct 2016

    Location: Bolton, England

    Posts: 865
    I'm Andrew.

    Default

    Quote Originally Posted by agk View Post
    Grab a pair of slabs from a local garden type place for a quick fix/experiment and stand the speaks on they.
    No, there's no compliance there, so the only effect is due to added mass. However, a heavy slab sitting on top of a tyre inner tube does have compliance and will be a lot more effective. Also, there would be some scope for tuning the system by altering the pressure in the inner tube.
    Of course, wobblyness could be an issue to bear in mind.

  4. #4
    Join Date: Dec 2017

    Location: South Africa

    Posts: 5
    I'm Brian.

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    I've also got suspended wood floors, I had good results with a marble base with blutak underneath and then I had nice rubber feet made for my speakers instead of using the spikes, there was definetly an improvement in the bass, it isolated the vibrations a lot as I could always feel the bass in my feet through the floor before but now I only feel it when really loud or with very deep bass.

  5. #5
    Join Date: Mar 2014

    Location: KY - Scotland

    Posts: 2,727
    I'm Mike.

    Default Isolating speakers from suspended floor


  6. #6
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 18,646
    I'm Martin.

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    Slabs do work after a fashion, I used to use them when I had a room with suspended floor (never again).

    Or you could try a pile of cork mats/floor tiles under each stand. Not tried that but it might work and less unsightly than slabs. Granite or wooden chopping boards might also be worth a go.
    Martin



    Current Lash Up:

    Sony X505ES CD Player * NVA P90SA passive pre / NVA A30 Power amp * JM Lab Electra 926 loudspeakers *



    "I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." - Hunter S Thompson

  7. #7
    Join Date: May 2012

    Location: Toulouse

    Posts: 3,986
    I'm GettingFunky.

    Default

    Blue Horizon spike shoes worked well for my stand mount speakers on a suspended floor.
    Kevin

    Funkified Technics SL1200 Mk2 (Funk FX-1200+, Techne-Audio modified DL-103/AT33PTG/II/, Funk Firm "Strata" platter, "Spin" bearing and BO!NG Isolation feet, MCRU/LDA PSU).
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  8. #8
    Join Date: Apr 2016

    Location: souf east for work

    Posts: 722
    I'm paul.

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    The slabs I use are covered in black velvet, got them with some red rose speakers and stands I once had. Have a suspended floor in my garden room, never had a problem, but then under the floor are just timbers and not a cavity like a house,
    Sony STR 6055 Denon DP80 Stax UA-70 Shure Ultra 500 Zu omen Decca C4E currently in residence

    Office system, DIY CSS fullrange speakers with aurum cantus G2 ribbons Najda dsp as dac Akai AM-U02 Jvc QL-A51 direct drive turntable
    SAE1000LT leema sub

    Garage system another Sony receiver, cassette deck and full range drivers in free air


    System components are subject to change without warning and at the discretion of the owner.

  9. #9
    Join Date: Apr 2016

    Location: souf east for work

    Posts: 722
    I'm paul.

    Default

    When I built a listening room in my barn in France I built concrete columns under the floor, level with the floor and stood the speakers on them. Worked a treat.
    Sony STR 6055 Denon DP80 Stax UA-70 Shure Ultra 500 Zu omen Decca C4E currently in residence

    Office system, DIY CSS fullrange speakers with aurum cantus G2 ribbons Najda dsp as dac Akai AM-U02 Jvc QL-A51 direct drive turntable
    SAE1000LT leema sub

    Garage system another Sony receiver, cassette deck and full range drivers in free air


    System components are subject to change without warning and at the discretion of the owner.

  10. #10
    Join Date: Apr 2015

    Location: Central Virginia

    Posts: 702
    I'm Russell.

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    Iíve read that if you have a suspended floor, the best place to locate speakers is close to the end of the joist. Placing your speakers along an inside wall where the floor is bouncier exasperates the problem.

    And similar to Paulís solution, if there is crawl space under your floor you can brace up the floor directly under the speakers, with a paving stone and some heavy timber under the joist. Whether this will prevent bass from propagating to the neighbors? Isolating from the floor is bound to help.


    Sent from my iPad using Tapatalk

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