Ok guys I'm going to dynamatt my brothers car and I need to know what you guys have used and what kind of results you have experienced.

From researching the net it looks like dynamatt extreme is the best there is but it would cost like 500 bucks atleast to do his entire car from top to bottom.

What other products have you guys used and where can I find this stuff cheaper.

Thanks guys.

 

My opinion based on results is that it is 100% junk ...
Use something else ... It's VERY expensive and has
dubious claims. No fabric can convert sound to energy
or heat short of the stealth anechoic <sp?> panels
on the outside of the Stealth bombers and Stealth
submarines.

Cliff

 

It's much cheaper and easer to to put on then the sticky on stuff get about 5 cans it will do the hole car.........

 

I got to look at what im type'n .... i allways F*ck up my post's lol

 

I found dynamat for $100 for a 36 sqft piece of it. Thats a pretty sweet deal I think.

 

RTKILLA


I just did my truck about a month ago with 2 layers of RAAMmat60 from the front firewall all the way up the back wall, and all 4 doors. I was lucky enough to get in a group buy at another site so each roll of RAAMmat 60 cost me the same as the orig. It was about 126 sq ft for about 160.00 shipped. I was given about 25 sq ft extra from another person also so that helped You can check them out at http://www.raamaudio.com/index.htm
It the same as B-Quite brown bread and sticks really well and has low smell for a day or two and its gone. In the 100 degree days we have had it hasn`t even budged or started to unstick. Its the same silver backed stuff you see on the website but the 60 series has dimples on it instead of the wrinkled look. It applies real easy and cuts easy too.

This is just my opinion on this but after comparing samples and looking at cost vs sq ft I chose this brand and was glad I did.

 

www.b-quiet.com has dynamat alternatives. I'd suggest their brow bread, but I personally used two layers of extreme.

They are significantly cheaper than dynamat.

If you don't care about weight, just use multiple layers of whatever is cheapest.

It DOES work. There is an ANSI standard to measure noise->heat conversion. Dynamat has their numbers published, and most others will tell you if you ask. Expect 20%-40% effectivness. That's a cut of a couple of db across the entire audio range(very noticable).

As a personal tail, my two layers of dynamat made the cab quiet enough for my wife. (who was QUITE pissed at the long-tubes)

Coldie

 

Coldie is right be-quiet is awesome, my friend bought two big rolls not sure exactly exact amount but one roll covered his car completly from front to back twice and is gravy to install. I think it is about 300% cheaper than dynamat at least trust me this is the ticket.

Chuck

 

For those who doubt the effectiveness of constrained layer mastics as vibration damping compounds - pull up your own stock carpet and look at the floorboard. Then pop the hood and look at the stuff coming out of the firewall gaps. Notice anything?

'nuff said.

I used to formulate this stuff for OEM applications. We did both wilting floorboard laminates and foaming firewall fillers. The L uses both. There IS a science to this. It has to do with glass transition temperatures, viscosity, temperature, mass, filler geometry, and bond strength. We spent a lot of time tuning the formula to meet the specs.

If you just spray tar on the floor you won't see the same effects as a constrained layer properly bonded to the sheet metal. I understand the outrage against the cost. But I've done the full Dynamat Extreme treatment and I can say it does make a difference.

 

My whole truck is dynomatted (sp?) and i have two 12'' subs and infinity kappa speakers with about 1000 watts running everything....
its worked great for me, really deadens the sound quite well....
ill turn up the stereo and show people how loud it is with the windows down and how quiet it is with them up...i really reccomend the stuff

 

BTW: The best possible sound is a combination of all methods.

This is a gross overkill, but will result is essentially a dead car:

1) Spray in stuff
2) Use the aluminium foil (Dynaplate)
3) Two layers of extreme on top of the plate.
4) a layer of foam deadening on top of the extreme.

We're talking about $2000 in material and easily 20 hours of labor to do it right, but you will have a world class sound dead car.

Coldie

BTW: I'm not suggesting this is sane in any way, but that the methods do in fact help each other and "stack"

 

what he said.. all I can tell you is that I had my doors done when I had the Focal speakers installed and the difference is huge.. do it!!!!

 

No material will produce power or sound,however, Dynamat products will increase signal-to-noise ratio,which directly affects your amps & speakers . When you increase signal-to noise ratio, amps & speakers become more efficient.Audio efficiency IS measurable. A vehicle with sound deadening materials will produce MORE measurable power & sound than a vehicle w/o sound deadening materials. I don't endorse any particular brand,but I do recommend use of these materals. I have done everything except the roof & firewall of my L and I get many comments about the power,sound,& clarity of my stereo. Hope this helps.