interesting thread. thank you all for sharing your knowledge. I decided to contribute my 2 cents.
I've found my exige S to be too noisy. and not the good kind of noisy. but the rattling/poor quality/metal box in a washing machine noisy. and I've decided to see whether I can reduce some of the noise down.
I've used Decibel 10th app for iphone to measure sound level before the modifications, and after.
here's what I've found:
- i have installed vibration damper (second skin - damplifier pro) and noise barrier under the seats (second skin - luxury liner pro), and on part of the firewall.
zero changes in Decible 10th app. used the same road, same driving conditions, same hour of the day. (its the route I take every morning).
next, I went after the belly pan and door skins.
I have installed damplifier pro, luxury liner pro, and foamly wall panels inside the door skins.
I've used damplifier pro, and mat spray on the belly pan.
Decible 10th show decrease from 100db to 92db.
the car feels way more civilized. the rattling noise is gone. you can hear mostly the exhaust, some engine noise, and wind noise on highway speeds.
it was also clearly noticeably by my family whenever I call them while driving, they can finally hear me clearly.
color me impressed.
-second skin - damplifier pro - VIBRATION DAMPERS - CLD - Damplifier Pro? - Second Skin Audio
-second skin - luxury liner pro - Luxury car quiet with our noise insulation products Luxury Liner? Luxury Liner Pro? | Second Skin Audio, Made in the USA.
- Design Engineering boom mat spray -
- Foamly - Acoustic Foam Sound Absorption Pyramid Studio Treatment Wall Panels -