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Thread: Vibration Isolation Info

  1. #11
    Join Date: Mar 2017

    Location: Seaford UK

    Posts: 1,054
    I'm Dennis.

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    Your results are interesting Neil, and somehow I feel that we are fed ideas without verification by the market.

    My speakers weigh 77kg and are have an MDF base of 1.5" thickness. They are 20" front to back by 17", and are resting on new carpet (non foam) pile. What is your opinion on that arrangement? I have bought S/S domes to screw into the bases which were originally designed for spikes, but you can imagine 77kg on spikes into a wooden floor? I really wonder at the need for even the domes.

    That arrangement is interesting Clive, but arguably the main transient power is in the harmonics, this being felt when in phase with the fundamentals. Yours remind me of the Celestion 6000 woofers, but they were bipole and not dipole like yours. I remember the Hi-Fi News write up on the ideas behind the resulting smooth bass response.

  2. #12
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 60,522
    I'm Grant.

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    The movement should equal out at a guess. Interesting idea
    Regards,
    Grant .... ؠ

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  3. #13
    Join Date: Apr 2008

    Location: Warrington

    Posts: 3,403
    I'm Neil.

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    Quote Originally Posted by Pharos View Post
    Your results are interesting Neil, and somehow I feel that we are fed ideas without verification by the market.

    My speakers weigh 77kg and are have an MDF base of 1.5" thickness. They are 20" front to back by 17", and are resting on new carpet (non foam) pile. What is your opinion on that arrangement? I have bought S/S domes to screw into the bases which were originally designed for spikes, but you can imagine 77kg on spikes into a wooden floor? I really wonder at the need for even the domes.

    That arrangement is interesting Clive, but arguably the main transient power is in the harmonics, this being felt when in phase with the fundamentals. Yours remind me of the Celestion 6000 woofers, but they were bipole and not dipole like yours. I remember the Hi-Fi News write up on the ideas behind the resulting smooth bass response.
    Youíre right, those are some heavy-ass speakers, even with the most appropriate Sorbothane I could find, 4x spheres would support 40kg, so you would need 8x under each speaker... and even then what a ballache to site.

    From what I can see, perhaps the Auralex Gramma would be more appropriate, if at all...
    Mana Acoustics Racks / Bright Star IsoNodes Decoupling >> Allo DigiOne Player >> Pedja Rogic's Audial Model S DAC + Pioneer PL-71 turntable / Vista Audio phono-1 mk II / Denon PCL-5 headshell / Reson Reca >> LFD DLS >> LFD PA2M (SE) >> Royd RR3s.

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