 Rust Repair Questions |
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| bbrock |
 Sep 19 2019, 07:43 PM
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#21
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914 Guru  Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains 
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And pads and constraint layers are best at dampening different types of noise. The elastic mass constraint layers dampen resonant vibration in metal and such, whereas the pads are better at attentuating sound waves in the air. Since most of the noise is caused by resonant drumming of the sheet metal in the chassis, constraint layers are going to cut more noise in the cabin like Phil said. The reason the dreaded firewall mat is thick fibrous material is because it is designed to attenuate sound waves from the engine before they pass into the cabin. Maximum sound dampening combines both materials.
I'm probably going to lay some jute padding under my floor mats but only if they can be installed in stealth mode. |
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