I'm wondering what you guys suggest I do with dynamatting the spare tire well. There are existing foam pads. Should I remove the pads altogether, or glue them back on over the dynamat. I'm looking to reduce cabin noise. Thanks.

 

I remember seeing someone that did something like 4 layers of the entire pan of the car, and it really did not reduce road noise. Including doors. Its a convertible, your not going to reduce noise that much, and only add weight to the car.

However, if I were to do a location that was foam covered (foam sheets glued to the body panels) I would remove the foam, as the dynomat isn't going to do anything when applied over foam. If you want the foam back (it keeps the spare from rattling) then glue it back onto the dynomat.

When I did my door speakers, I did dynomat the outer skin, and around the speakers. Not for noise reduction, but for better sounding "bass" from the 6.5" speakers in the door. And to keep them from making anything reverberate unwanted noise. I put "bass" in quotes as they really do not make too much bass, but the dynomat did help with what frequencies they can produce. I need a sub, I just cannot justify the cost right now. (something about the family wanting to eat or some crap like that )

 

Thanks for the advice. I already got the trunk floor covered. I might as well finish up the spare tire wheel well. Hope your wrong about the noise reduction. I'm getting a bit tired of hearing all the road noise with the top up. I'm also not too worried about adding the 10ish pounds to the rear.

 

I added some dynamat to the floor under the passenger seat and it did reduce a lot of squeaks and road noise. Definitely made the car sound more solid while driving around the city. It also almost completely eradicated the drone from my exhaust (with the silencer on).

 

for the suggestion. Keep them coming.

 

It may reduce noise, the main point of my response was the guy I talked about going a bit over board with the stuff, and not really dropping the noise. I believe he was going for a drop in db's and it only dropped a few. It very well could drop the drone of an exhaust, or muffle some noises. It definitely will not get you "lexus" quiet.

If I were to try to remove as much noise as possible, I would go for the firewall to drop engine noise, transmission tunnel to get rid of any trans noise, cover the floor where the exhaust is, and anything that got close to the wheels. especially in the back. Maybe the diff area in the trunk. That should get the majority of the noises removed. Doing my doors did help with road noise, but it really just made it emphasize other road noises from the rear. Kinda made a dead spot where the doors are for road noise. But I could still hear it because of the window and top's wind noise.