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Thread: Sound dampening..

  1. #41
    Patrol God BigRAWesty's Avatar
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    Quote Originally Posted by Parksy View Post
    Yeah dynamat for the win! Absolutely. No I don't think absolute coverage is necessary. Maybe if you want the thermo blocking properties, but for vibration reduction it only needs minimal coverage to do the job.
    I'm thinking half a sheet each door, wheel arches, Fire wall and drive shaft hump..
    I think 3.6m2 will cover that.
    Then foam the rest..
    I'm dreading the dash tear down..
    Also thinking I might replace the busted vents while out.. Lol
    The list keeps growing.. :banghead:
    Cheers
    Kallen Westbrook

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  3. #42
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    Quote Originally Posted by Westy's Accessories View Post
    Well a pull up on the reigns after parksy informed me of an issue I have been reading..
    And have come across this..
    http://www.sounddeadenershowdown.com
    It's an interesting read, and has possible saved me hundreds..

    Just to cap the link as it is quite long..
    Products like dynamat and fatmat are sound dampening products, not sound blocking / absorbing.
    So for these products to be at full effect you only need a panel surface coverage of 24%.
    The idea if 100% coverage has come from aftermarket auto lines.
    The reasons why, Its thin and dense. So the sound waves pass right threw like it was sheet metal.
    Quote from link
    "
    It's the barrier layer that makes the most difference. I use mass loaded vinyl (MLV) for this. MLV is the answer to the question: "How inexpensively can we create a substitute for lead sheeting that will accomplish the same thing"?

    Mass loaded vinyl is dense and limp - the ideal characteristics for a barrier. A material's resonant frequency is determined by its mass, stiffness and geometric. Low mass/high stiffness mean high resonant frequency. High mass and low stiffness mean a low resonant frequency. MLV and lead sheeting have resonant frequencies below the the audible range. Makes it an excellent barrier.."

    So I my friends will be probably bypassing the dynamat, and going a different option.

    Sorry parksy..
    G'day folks,

    I used a sound deadening mat from Clark rubber, it cost me between $250.00 to $300.00 for memory. This product has really cut the sound level down.



    It was easy to work with!



    PS, It also keeps the heat out and increases the cold air performance from the air-con.

    Regards,

    RLI
    The halls been rented the bands been paid, time to see you dance!

  4. The Following User Says Thank You to PMC For This Useful Post:

    Parksy (28th October 2013)

  5. #43
    Patrol God BigRAWesty's Avatar
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    Was looking at that stuff to RLI, can get 10m2 cheap imported for $200..
    They say the foam is mold proof, do you think it would be water proof to?
    Cheers
    Kallen Westbrook

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    Quote Originally Posted by Westy's Accessories View Post
    Was looking at that stuff to RLI, can get 10m2 cheap imported for $200..
    They say the foam is mold proof, do you think it would be water proof to?
    Not a problem it is covered by two layers of aluminum tin foil sheets.

    Regards,

    RLI
    The halls been rented the bands been paid, time to see you dance!

  7. #45
    Patrol God BigRAWesty's Avatar
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    And is self adhesives or supply your own glue?
    Cheers
    Kallen Westbrook

  8. #46
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    Quote Originally Posted by Westy's Accessories View Post
    And is self adhesives or supply your own glue?
    G'day mate,

    Self adhesive, i also applied sikaflex PRO for added adhesiveness.

    Regards,

    RLI
    The halls been rented the bands been paid, time to see you dance!

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    BigRAWesty (29th October 2013)

  10. #47
    Patrol God BigRAWesty's Avatar
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    Nice.. another one in the ring.
    Cheers
    Kallen Westbrook

  11. #48
    Patrol Freak Parksy's Avatar
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    Jaycar stuff arrived today, it's quite heavy. Ordered 10 sheets of the stuff and they are about 1kg per sheet.

  12. #49
    Patrol God BigRAWesty's Avatar
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    Is that self adhesive??
    If so will probably be good enough to substitute the dynamat out with.. 1kg per half meter.. That's 20kg to do the whole car.. Lol
    Carp..
    Cheers
    Kallen Westbrook

  13. #50
    Patrol Freak Parksy's Avatar
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    No it's not self adhesive. Would be perfect if it was, but unfortunately not.

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