Sound Deadening

[HitandRunDriver]

Not many threads at all on sound deadening so I figured I would bring this up...

My door panel leather is sagging and soon I'll be taking the panels off to glue the leather back in place. I figured that while I had the skins off, I might as well upgrade the stock speakers with these mentioned in this thread:

http://www.s197forum.com/forum/showthread.php?t=83755

So while I'm doing all that, I may as well do a little bit of deadening (rattles drive me &#%^$& crazy after having my 01 Tahoe with 2 12's. I've only noticed some slight vibration behind the doors when pushing the stock shaker 500 a little bit and figured that upgrading the speakers would only add to it.

When I'm doing this, should I just use a square cutout of the deadener around the speaker, or are there certain other areas on the doors and rear deck I should apply it to?

 

[BadHabit2Break]

depends on how far your want to take your sound deadener. Some just do around the speaker, others do the whole door.

On my 06 GT, I did my whole doors cause of all the little rattles. Once done, it shut solid again.

 

[bigwilly43729]

If I ever do it over again, I'll just do it around the speaker. I didn't feel that the entire door was all that necessary. The mirror and sub cover had more rattles than the rest of the door in my 05.

 

[HitandRunDriver]

What was the name of the deadener you were using? I remember on sound deadener showdown, they recommended butyl backed over anything else because the other materials were prone to melting and running. Dynamat is the standard for sound deadener, but I know there's probably better stuff out there for less money. I've heard good things about second skin, but not much else.

 

[bigwilly43729]

I just ordered a bulk pack of dynamat. I got it awhile ago on ebay. It's all the same to me, but I'm sure audiophiles would say different.

 

[BlackReign]

If I ever do it over again, I'll just do it around the speaker. I didn't feel that the entire door was all that necessary. The mirror and sub cover had more rattles than the rest of the door in my 05.

I did some research on this years ago and really, with Dynamat you only really need to cover (going from memory) like 25% of the area. But that just dampens the vibration on the area. If you want to actually sound deaden, you need to do the Dynamat (or similar product), a layer of close cell foam and then vinyl over it all.

Again, I'm going from memory on that. I can try and dig up the old information I found if needed...but that's what I was planning on doing in my old 01 Cobra.

 

[HitandRunDriver]

I too have a rattle/squeak from the mirror on the driver side and some small rattles/vibrations from the exhaust I want to deaden a bit. I'll probably put some around the speakers and other spots I can see in the door, around the speakers on the rear deck, and possibly the trunk as well. I'm not looking for a professional level here, just enough to stop the small stuff.

 

[dlrs14]

If your just doing a small system, just doing sections is fine. Though the more you do the happier you'll be. Check out a company called second skin audio. They have a product called damplifer pro. It's a butyl backed deadener. I used it to do my entire car, from floor to roof. Huge difference, no more rattles, way reduced road noise and helped with the dreaded exhaust drone. Did add a good amount of weight but it was worth it imo.

 

[KevDon92]

How about Raamat?

 

[HitandRunDriver]

I've heard raamat uses asphalt based backing...could be wrong

 

[NotaHybrid]

It is asphalt based I believe, can't remember. I put some in my car not too long ago.

 

[KevDon92]

And asphalt is the one that can melt and peel in high heat, right? May have to look elsewhere if thats the case

 

[HitandRunDriver]

Exactly....go butyl backed or don't go at all.