Dynamat Xtreme Sound Deadening Car Insulation Door Kit 10435 – Pre Cut Noise Dampening Kit for 2 Standard Car Doors – Easy Self Adhesive Install – Made in USA – 4 Sheets 12”x36” Each, 12 sq ft total

I own a 2003 Maxima and replaced the factory Bose head unit last year and somehow lost the audio signal to my sub and tweeters. (I still have the factory Bose amp (200W Max) and Bose door speakers.) I installed a Kicker 8" sub with a Kicker mono amp, and also bought new Pioneer tweeters and wired them directly to the head unit. While adding the new sub re-added some of the "oomph" to the bass that I lost, and now have some of the highs back with the new tweeters, I still find something "missing" from the sound that I had before the head unit was replaced. So I'm looking to upgrade the door speakers next and figured I'd do it right by installing some of this after doing some research. I started with the trunk lid, but was still somewhat skeptical of the results. After going for a drive I was very surprised at the reduced noise coming from the rear of the car. This stuff seems to really work. After also doing the front and rear doors with this stuff, my factory Bose speakers now have more full sound, better bass from the front speakers, and I really enjoy listening to the stereo now - especially with my iPhone's downloaded music. I can't believe the difference. Maybe its just me, but the car even sounds quieter now. I can crank up the music and still enjoy it. The only downside is now I can't figure out if I still need to replace the speakers and get a new amp. :) Dynamat is more expensive than some of the competitors - Hushmat, Noico, etc, but I can't comment if it is any better. I just know that this does what it claims. I didn't cover the entire door panel like I've seen in some videos as I didn't want to make it difficult to get at any door or electrical components in the event I have to replace something like a power window motor. But I did cover as much as I could of the metal on the four door panels as well as the inside of the exterior panels. After doing all those and the trunk lid, I still have 1.5 sheets left. Install was easy, just cleaned up the areas with mineral spirits. Xtreme also does not require using a heat gun to install like the regular Dynamat.

I bought this to improve the cab sound in my Dakota Quad Cab when I was installing new speakers (my wife blew out the old ones!!). It was very easy to work with and install. All I needed was a utility knife to cut the mat to the sizes I needed for the install. It will stay on after it is in place but it is forgiving on install. This means you can make adjustments with the piece you are working with before you roller it down. Using the roller tool (sold separately)was worth the price of admission. It definitely made install easier and was able to clear any air pockets as well as give excellent adhesion.RESULTS: After the install there was a quick difference that could be heard. First thing you noticed is that when the doors are closed they sound more like a luxury car door closing. No more hollow sound, they sounded more solid. The sound in the cab is reduced and this is noticeable when no radio is on. Road noise has been reduced and it is a much nicer environment. As for the music...much nicer listening and clearer due to no competing noises from the road. Everyone who enters the vehicle likes it and knows there is a difference.NOTES: I installed this on the inner door and the outer door. Some sites and installers will tell you this is unnecessary but if you are in the door why not. The thin sheet metal is all that is between you and the road. This pack covered two doors in the front. I bought two boxes to cover all four doors. It took one afternoon to install and it was complete. This is not a hard project at all. If you can get the door panels on and off you can install this product.PRICE: I checked all over the internet and found that Amazon had the best price for this. From my experience this is likely to continue. Free shipping just solidified the deal. Check what you might need and compare the 4 sheet and 9 sheet boxes. Most of the time 2 4 sheet boxes will be cheaper per square inch and get the job done. Check prices and decide before you purchase.OVERALL: I am very pleased with this product and would recommend it to anyone. It does what it is advertised to and is very easy to install. It will not make much difference if your vehicle has a lot of soundproofing already but if your car does not then this will do wonders.My truck had some very small pieces of factory mat in the outer door metal already. They were just covered by the Dynamat. You may find the same thing during your install. They must think the truck needed some. I just took it up a notch.

I just fully restored the interior of my foxbody Mustang. Between the supercharged motor, full exhaust, and very firm racing suspension, the car is LOUD inside and out. After stripping out the entire interior and trunk down to bare metal, I first applied a Foxbody coupe specific matched Dynamat kit from Late Model Restoration. But there were a lot of flat metal panels left untreated, and flat panels are what tend to vibrate the most. So I got a couple of these generic Dynamat kits to cover more area. Overkill? Maybe. But considering how loud the car is to begin with, I figured it couldn’t hurt anything but my wallet (this stuff isn’t cheap, haha) and maybe the penalty of added weight (so what, it’s a light car with over 670 HP and nearly the same in torque, so what’s an extra 75 or so lbs of sound dampening?). Note, I also used this material to repair and reinforce the plastic/carpeted trunk pieces which were cracked from years of abuse, and are almost impossible to find now. I can sat that even with half the interior still out of the car, the reduction in Noise and vibration is noticeable. The car is still loud as hell, but to a lesser degree and the exhaust drone isn’t as palpable. So while not cheap, this stuff works, and is very easy to apply. Just make sure the surfaces are cleaned and degreased, that you have a little roller tool to flatter out the surface, and be careful because the aluminum edges are sharp.