Xtreme Sound Deadening Car Insulation Speaker Pack 10415 – Pre Cut Noise Dampening Kit for Audio Speakers – Easy Self Adhesive Install – Made in USA – 2 Sheets 10”x10” Each, 1.4 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.

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I applied Dynamat Xtreme to the underside of my Synology NAS's metal cover, which had developed a distracting buzzing noise when its 8 drives would perform certain activities. This Dynamat was thinner than I expected, but it added enough mass that the buzzing has completely disappeared. I'm told that some butyl products can have a noticeable odor to them. The Dynamat has no odor. After cleaning the underside of the metal cover with 99% isopropyl alcohol, I cut a rectangle sized to cover the center 60% of its surface. To cut the material, I used a box cutter with a new blade and a cutting mat. This worked fine, but I eventually determined that cutting with a large scissors was easier. Removing the backing paper was easy, and handling and positioning the Dynamat was also easy. I used a roller to ensure it was securely and evenly applied. My second use case for this Dynamat was as a protective layer between my office wall and an HDPE mounting block I was attaching to it. I wanted something that would both protect the surface of the wall and also prevent any buzzes or rattles from the device I was mounting on the block. The Dynamat worked well for this application too. I was surprised with how well it adhered to the HDPE given how few materials stick to it. So far so good. So why only four stars? There are two things I would point to. First, Dynamat is butyl with a layer of foil on top. The foil is black, and whatever material is used to make it black comes off pretty easily. Isopropyl alcohol will take it off with no effort. And I noticed that it came off on my office wall too. In fact, I ended up covering the Dynamat on the back of the HDPE mounting block with aluminum tape to protect the wall from the black-colored foil and from the butyl that squeezed out around the edges of the Dynamat. The second negative is the price. Dynamat Xtreme is a good product and I'm pleased with the end result but I'm not sure that what the company is charging for two 10-inch squares of the material represents a great value. There are foil-covered butyl alternatives that are available for significantly less. Whether the less expensive alternatives are noticeably different, I can't say. I decided to go with the "sure thing". But if I needed to buy this in larger quantities, I would have investigated less expensive alternatives. The bottom line is that I would absolutely recommend Dynamat Xtreme. It was easy to cut and install, and it has proven effective for both of my use cases. Four stars.

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.

This product worked great, I was replacing the OEM speakers in my Toyota 4Runner and thought it would be a good time to soundproof the road noise and make the stereo sound better. After doing all four doors and the tailgate, the ride is much quieter. This product was easy to use and stuck well to the door panels. I did use a roller to get proper adhesion. I cut the product into smaller pieces to make it easier to work with. I bought two boxes and there was more than enough for the four doors and tailgate area.

Honestly speaking, this is one of the best products that I have ever purchased. I'm an audiophile who installed a high-end stereo system (4 Polk Audio MM6501, JL Audio XD400 amp, and JVC XR-810 receiver) into a new VW Tiguan. The primary reason that I installed dynamat into all four of my doors was that I heard some rattling at higher volumes. Not only did the dynamat eliminate the rattling, it truly improved the sound by a large margin. Bass and mids became "punchier" and more lively. Unusually, volume increased by about 20% when measured against the volume knob on my receiver. In sum, it transformed a good sound system into a very good system. I'm still ironing out the sound between my amp and receiver to turn it into an excellent system, but the dynamat more than did its job. BTW, I used their better roller, which worked excellently. I had NO problems getting cut despite not using gloves and using only moderate awareness and care. Since my doors did not allow me to lay it out in large strips, I had to cut it into many shapes using heavy duty scissors, which worked very well. Once you remove the paper backing, the material adheres to the doors easily, but not so readily so that you can't lift if off again to place it where you want. The patchwork that I created may not have been pretty, but it worked very, very well. The extra weight on the door makes a nice solid sound when you close it as well. Honestly, I can't imagine any cons to this product. Very easy to cut, not too sticky, easy to roll out the air -- and it improves your sound my a large margin!

Packaging: Shipped in a Amazon brown box. The contents were in a branded DYNAMAT box very tightly folded. Product Impressions: The materials come pretty tightly packed. I recommend taking it out the night before a project to let it "straighten out" before install as that helped me install easier. The material was easy to install and cut up. I used literally every square inch of it on my 4 doors of my Camry Hybrid. It's weird to barely hear any road noise from the doors and just hear the wind going across the glass but hey, it means its doing its job! In my opinion, if you want a budget buy/build, look up the "bell" metaphor for this as you're going to pay a pretty penny to do all 4 doors of your car with this covering the whole door. I did patches and it appears to work the same. Watch YouTube videos and see what people say for your car! If you get any of the tar-like on any tools, I tested Goo-Gone on it and it removed it quite nicely. Usability: Works great on CLEANED metal frame of my Camry Hybrid. Use isopropyl alcohol to clean the surface first! Overall Thoughts: Great price, easy install, backing DID make a nice difference for my new speakers. Note your car doors will sound differently closing and will be heavier.