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eDead UE, my thoughts...
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<blockquote data-quote="Stel" data-source="post: 4215266" data-attributes="member: 574698"><p>This is by far the most important test, yet no one has done it. How well do the products dampen sheet metal vibrations at various frequencies? I would also be interested in seeing how different combinations affect the vibration damping ability. ie. how does 2 layers of eDead v1^2 with mylar compare to 1 layer of raammat with aluminum? How does an extra layer of mylar or aluminum compare to material of the same thickness that has only one layer of mylar or aluminum? Does it improve damping ability, reduce it, or have little effect?</p><p></p><p>I would also like to see tests on their ability to stop sound from passing through at various frequencies (as would be the case over holes in a door or rear deck). At least this test could easily be done with two custom sound absorbing chambers connected by a hole covered by the product with an accurate SPL meter in one and a sound source in the other. It would be interesting to see the effect of different size holes too.</p></blockquote><p></p>
[QUOTE="Stel, post: 4215266, member: 574698"] This is by far the most important test, yet no one has done it. How well do the products dampen sheet metal vibrations at various frequencies? I would also be interested in seeing how different combinations affect the vibration damping ability. ie. how does 2 layers of eDead v1^2 with mylar compare to 1 layer of raammat with aluminum? How does an extra layer of mylar or aluminum compare to material of the same thickness that has only one layer of mylar or aluminum? Does it improve damping ability, reduce it, or have little effect? I would also like to see tests on their ability to stop sound from passing through at various frequencies (as would be the case over holes in a door or rear deck). At least this test could easily be done with two custom sound absorbing chambers connected by a hole covered by the product with an accurate SPL meter in one and a sound source in the other. It would be interesting to see the effect of different size holes too. [/QUOTE]
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