It is amazing how well this stuff works. My old truck was converted to a diesel, and was LOUD inside. I covered the firewall and transmission tunnel in an elastomer sound damp strip material, and it helped, but not a ton. I had a little 6" square left over, so I stuck that on the inside of the roof skin right over the driver's seat, and it was so much better. Just getting rid of the resonance of that roof sheet makes such a difference. I used Sikaflex to seal up the body on my current truck, and it's even better. Even just bare metal inside, having that elastomer to dampen resonant vibrations really cuts down the noise.
![FNAF vs TF2 - Episode 2 [SFM]](http://i.ytimg.com/vi/z5b3V2-VLb0/mqdefault.jpg)
It is amazing how well this stuff works. My old truck was converted to a diesel, and was LOUD inside. I covered the firewall and transmission tunnel in an elastomer sound damp strip material, and it helped, but not a ton. I had a little 6" square left over, so I stuck that on the inside of the roof skin right over the driver's seat, and it was so much better. Just getting rid of the resonance of that roof sheet makes such a difference.
I used Sikaflex to seal up the body on my current truck, and it's even better. Even just bare metal inside, having that elastomer to dampen resonant vibrations really cuts down the noise.
How can I get a sample to perform acoustics testing?