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Sound Deadener Test Results

13K views 21 replies 13 participants last post by  SkizeR  
#1 · (Edited)
Hey everyone. You all probably remember that Chris (2stubborn2fail) for his sound deadening testing years ago. Some of you may also remember that he was building a new rig and doing more testing via his Facebook group, The Deadening. Well, a few months ago he did a large round of testing. Unfortunately, its hard to find and hard to understand for those that aren't well versed in acoustics. So, today I decided to sit down and break it all down into an easy-to-digest article. Enjoy.

 
#2 ·
Link does not work..... getting 404 Page not found error.
 
#5 ·
Really interesting and obviously Resonix came out looking great.

I would like to see how well real world correlates with your math - that is, I'd like to see (hear ?) if putting 4 times (or whatever the numbers say) as much brand X on the test panel actually accomplishes a similar result, or if it turns out it doesn't actually take 4 times as much (multiple layers may behave differently for example), or, alternatively, if it never reaches the same level.
 
#6 ·
It might be more interesting to see the mathematical modelling of it?

Like the changes with a softer compliance layer, and thicker and thinner lead thicknesses…

It could be that the other products may be better by disammbling them and thickening up each layer?

But all that is usually what is done in the engineering and not just given away.
 
#13 ·
Thanks for taking the time to compile the data for us Nick! I look forward to reading through the results.
 
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#20 ·
B-stock probably isn't something he'd want to test since its not something that's regularly available and its unpredictable.
 
#21 ·
@SkizeR - i think a paragraph on your page might be out of place. This is at the bottom of the page:

For starters, there are four main categories for sound treatment for your vehicle. The first one is to control structure-borne vibration, also known as resonance. Constrained Layer Dampers, commonly referred to as CLD, are the most common types of product to handle this job. The second category is to decouple panels and prevent them from vibrating against each other. A typical product for this is Closed Cell Foam, commonly referred to as CCF. The last main aspect category of sound treatment for your car is blocking outside noise. For this, you need something with mass. The most popular product is Mass Loaded Vinyl, commonly referred to as MLV.