NVX Stealth Black SDBSK2 90 mil Thick 1.38 sqft. Car Sound Damping Mat, Butyl Automotive Sound Deadener, Audio Noise Vibration Insulation, and Dampening (Two 10" x 10" Pieces) - Speaker Kit

I have used different sound deadeners in the past, but this one seems to be very good quality. Thick aluminum foil on one side. Easy to cut with scissors or a razor blade. the paper backing stays on good and is fairly easy to remove. The adhesive sticks like crazy, especially if the temperature is warm and you use a roller while applying it. Be forewarned that if you need to remove a section after it has been installed and rolled out, good luck as it does not come off easy or in one piece. Once installed it makes a notable difference in sound and pretty much eliminates that tinny sound from door panels, body panels, and floorboard. Precautions to keep in mind: the foil is thick and can cut you easily, wear gloves! Make sure to cover all surfaces you are working around that you do not want ruined, if you get it on your upholstery or carpet, it will not come off (at least I have not found anything that successfully removes it without making things worse!) Great product, the only real negative I found is that NVX folds the larger pieces in the box for shipping, this leaves creases and can cause the protective wax backing to lift up around those creases.

Very happy with this stuff. So far I have only used it on my two front door but the results are outstanding. Very easy to cut with a utility knife, sticks very well and folds around bends and corners of sheet metal much easier than I was expecting. I used two layers on the outside door and 3 layers behind the speakers with a foam pad on top to absorb back waves. Then i put it on the inner door and sealed off all of the holes including the massive hole that the manufacturer leave to service the window mechanism...hope i don't ever have to get back in there lol... I tapped on the outside of the door and then the other side that wasn't treated yet and the difference in resonance and vibration was substantial. I also gained a SIGNIFICANT amount of midbass from my Focal 165 k2 speakers. Also big difference in road noise. Still have plently left over to do the trunk when I get some more time. I'll be using NVX sound deadening in all installs I ever do from now on. Do not spend thousands on great speakers, amps, processing,.etc. without proper sound deadening and install. Excellent quality at a great value

Works amazing for the price will be buying again to cover more area in the future

Product looks good. I saw some comparisons to Soundskins which is more expensive. I have both, can't really tell if one is better than the other. Soundskins is thicker and heavier. But overall the product went on well and seems to work.

I loved everything about this product. I don't have 1 negative thing to say about it. Honestly I really tried to think of 1 thing that I didn't like and I couldn't find one. The package is great the materials that are being used for this product are amazing and lastly is, it just works so well. Super easy to cut and customize the shapes you need to lay down. Just take your time installing it and don't rush yourself. Make sure you have a ROLLER when doing this because it will make installing this much easier and quicker. I used it in my 2024 GMC SIERRA CREWCAB and it made the truck nice and sound. That tinny / rattle noise is gone. This was enough for me to do the back wall of the cab and the amp rack that went behind the rear seats, the doors and some spots just around the front dash area and a little bit on the floor but I didn't do anything on the roof. I wasn't trying to tare down the headliner yet, maybe later I will but again for 10 sheets of 18x32 this package was 💯🔥🫡🤝🤘🤙🤫

as stated this is a fantastic product and the price is unbeatable! It is very dense for the thickness, conforms very easily (I recommend using a heat gun as you roll it for ease of install), very sticky and most of all it works! Installed in my 92 K1500 which was a complete rattle trap to say the least... The stereo would have everything in the truck flexing and rattling so bad I didnt even want to listen to it anymore... I applied to main problem areas (roof, inner door skins, rear wall of cab) and wow what a difference! Sounds so solid and very little exterior/road noise (and I have 3" exhaust and super 10 mufflers)... Will soon be re-installing the stereo equipment so I will update my review to let it be known the improvement there

3 stars mainly for the appearance. Don’t even bother buying the “stealth” version. It honestly looks like they take the standard silver one and spray paint it. Right of the box it looks terrible. I understand in most cases you will never see it, but what’s the point of offering it and it comes out of the box looking like it’s been dragged across the concrete. Not just the top piece it’s every single sheet.

It definitely works. From what I understand, you're not really blocking much road noise, you're reducing the flex and vibration on the door panels which cuts down on noise. My observation is that the car is a bit quieter and a lot of high-pitched noise is removed. What you still hear is a deeper, lower pitch. I haven't taken a long road trip with it yet, but it seems like a more relaxing drive. The door speakers sound a lot better, and the volume knob on my stereo is lower.I purchased the Stealth Black SDBBP40 90 mil Thick 36 sq ft. The package contained a tad over 36 sq feet as advertised. A few of the sheets had a small amount of the black topcoat worn/scratched exposing the silver color underneath. This was not an issue for me.It's not hard to do this job, but it's a time-consuming project that took me more than six hours to cover four doors. I read that there are diminishing returns after 30-50% coverage and I think I got 80% coverage on the outer door skins and far less on the inner skins and door cards. You're not supposed to bother applying it if you have to cut it down to small pieces less than 5 or 6 square inches. The inner skin and door cards for my vehicle had fewer places to apply it in larger pieces.