I'm working on replacing the Bose system in my car (2k2) and wanted to Dynamat Extreme (well use a clone product actually) the doors and the trunk and a few of the usual spots. About how much should I use? The stuff I'm looking at comes in 62.5 sqft rolls. Will one roll do the trick, or am I going to need two?

Stereodude

 

Hmmm...I think one roll would be enough but you might be cutting it kinda close. Best way to find out is just get a measuring tape and measure the doors on one side of the car. Get the sqft & multiply by 2. Figure out how much you'd have left for the trunk. I'm guessing not enough, but, I'll go out and measure my car at lunch....that's right....I'm at work.

What product are you using. I've read some posts on peel & seal (roofing sealant) being comparable and inexpensive but I've also read it smells like tar in the heat. I live in Houston & it will be 93degrees today! I don't really want to smell tar in my car...any suggestions?

 

three or four tree air freshners?

Really though, you could keep looking around for other knockoff deadening material and hopefully find one that doesn't stink.


Stereodude - I would say if you could, more would be better. You can always add more layers with the extra. Dunno about exactly what it'd take for a 2K2 though.

 

I was looking at RAAMmat60. It's 60mils thick, just like Dynamat Extreme. It's self adhesive and seems to be the cheapest of the 60mil thick sound deadeners (per square foot).

The asphalt based stuff like Stormguard and Peel and Seal are cheap, but are not self adhesive and they smell.

Would I only want to do the 4 doors and the trunk? or would I want to completely strip the interior and do the floor and everything else too? I'd presume that stripping the interior would be a tad overkill unless I was competing.

I've also looked at some other stuff that's 1/2" thick and claims nearly a 20dB reduction in noise. I'm tempted to use some of that stuff as well as the RAAMat60. However, it's $99 for 16square ft.

Stereodude

 

I for got to mention the names of the thicker stuff I've been looking at. B-Quiet (www.b-quiet.com) sells two kinds, Vcomp and Lcomp. They're good for over 30 dB of NR above 1kHz and around 20dB below that. Lcomp is more expensive of the two and does not have an adhesive on it, but it is rated slightly better at low frequencies. I'm thinking of putting a layer of RAAMmat60 on the doors, the trunk, and the other usual suspects. I was thinking of putting a layer of the Vcomp in all 4 doors and possibly on the floor and firewalls of the car.

Has anyone been in a car that had this level of treatment? Exactly how quiet will it be?

Stereodude

 

b-quiet also has brownbread, which is badass...not too expensive either.

eric

 

Yeah I know about Brownbread and the other stuff they sell. RAAMmat60 is less expensive and thicker than Brownbread. From what I've read they're all perform about the same. Obviously the thicker ones work better.

Stereodude

 

NEWS FLASH!!! The majority of the sound deadening products including b-quiet extreme are use the same rubberized asphalt adhesive as the Peel&Seal you can buy at Lowes. Verdict: they probably all smell the same. Easy way to find out...contact the producer of the sound deadening product. Ask them to fax or e-mail you the MSDS info for the product your looking for and voila! Now you can make an educated decision based on the comparison of the specs of the products.

 

check my homepage

 

It is actualy very sticky.
MR_eltoe I used Peal&Seal in my trunk and in my door panels. There is a slight smell in my trunk, But I have a black car. and could care less what my trunk smells like

 

It sure is sticky! I've used it on my license plate, but, have been hesitant to use it inside cause of the smell..I reeeeeeeeally need to do my rear deck.

 

I have used b-quiet on a full doors&floors in my Jeep cherokee, even the exhause side (2.5" exhaust), and there was NO stink at all. I used the basic (not brownbread) and it worked well, except for one part that I did not adhere toowell, and it peeled off and got on the window. This only happened one in one door. THe stuff was cheap, easier to apply than basic dynamat, and WORKED!

 

I doubt that the car will be much quieter at all. What you want may require some sort of lead sheets made specifically for reducing road noise. They'll be a LOT more expensive than conventional damping sheets, though.

However, if you add that much damping material, your stereo will sound very nice, though. I had that much in the front doors of my Explorer with a 3-way Dynaudio set (8-inch woofers) and it was absolutely breathtaking. No resonances, vibrations, or anything. It was the closest thing you could get to having sealed enclosures in your doors. It's definitely worth the labor!!

Tony

 

Some people have metered about a 6dB drop in the noise in the car after doing what I suggested. I did not end up doing that however.

I bought 50 sqft of peel and seal from Lowes. I treated all for doors (only the inside) with a single layer (a few spots have two). Only ended up using 25sqft for all four doors. My car is still in pieces scattered around the house. I'm only part way through this install.

Stereodude

 

Isn't 6dB about a 50% decrease in sound level? I realize I am not an expert by any means, but I highly doubt this. Even most car audio retailers/installers, who want to make money, will tell you that regular, conventional sound damping materials will not reduce road noise that much. If they do tell you this, get it in writing and ask if you can have a refund if it doesn't do what they told you.

I remember reading an article in some sort of consumer magazine (or was it a car audio magazine) that went out and bought a whole lot of Dynamat and put it EVERYWHERE inside a car. They measured for road noise in the car both before and after the install and the difference was negligible.

They did however state that their stereo sounded better due to the decreased vibrations caused by the speakers themselves.

Anyway, Stereodude, I hope your install goes well and you can't go wrong by doing what you're doing. BTW, did you take sound measurements in your car before you started? I would be curious as to your before/after results. I would also love to see your system on an RTA before and after. Now THAT'S where you will really see a difference.

Tony

 

You won't get 6db, but 3-4db is quite possible if you put as much sound deadening as I did.

 

I did a while ago. Unfortunately I didn't write them down, so really I don't have a baseline. I also can't do a before and after of the system response. I'm putting the system in now. I've not had it in the car prior, so a comparison isn't possible.

Stereodude