Wear gloves when installing! This product is only worth the money paid for it at Sonic Electronix. I cannot say the difference in the sound quality is even noticeable. I installed Dynamat thoroughly in the front door inner steel panels on my wife's Focus. The back I did not. All 4 speakers installed are identical Alpines. One in each of the 4 doors.
I cannot tell the difference in sound quality. Alpine head unit driving all 4 speakers and no others.

The car as a whole seems a bit quieter and more "solid" with the Dynamat, but I seriously doubt the efficacy of the product for audio reproduction purposes.

If extraneous rattling/vibrating noises are your problem, duct tape and/or chimney roof flashing will be just as effective and cheaper.

I highly reccomend you have this professionally installed.it works great but if you install improperly you will not get the benifits it offers plus any car repairs can be a lot spendier due to technicians having to work around it.

Dynamat is the original and works well. However they continue to over charge and give you less product than the competition. Compare nvx to Dynamat and you won't go back.

Dynamatt is still king in my opinion. In my last install I put it up against the hype of Peel n Seal from hardware store being just as good. Its not. Dynamatt much thicker so more effective and zero odor. Peel n seal will not smell as long as its used in a way that all adhesive bitumen is making full contact. If its used to cover door openings as in sealing, it will smell. Dynamatt is expensive but buying from this site is about 40percent cheaper than Worst Buy. I feel its worth the expense.

I am running 2 sundown audio 12s in a ported box tuned at 29hz running off a Hifonics brutus 2400 amp and I have flex. And lots of it. But I have 0 squeeks or rattles and the Dynamat has cut down some of the flex, I'd hate to see the flex without the Dynamat. Haha. But I had enough to cover the front two doors completely in a 98 gmc Sierra (big doors) and I covered about 80% of the back wall of the cab under the back window and I still have one whole sheet left. This stuff is great and a good price for what It is. However, the metal aluminum looking stuff is very sharp on the edges so look out for that. You can install it without the roller, but I'm sure the roller helps out a ton.

If you going to use sound damping around your speaker you should go ahead and do the whole door it dosen't cost much more, and get the dynaliner too.

I used this kit to cover both doors in my S-10 Blazer (its a 2 door) and it went in just fine. This would be a weekend type project, something to just take your time with and work out any air bubbles. It gives my truck that solid door feel. No more rattles.

I've used 3 of these door kits in total. Easy to use if you are careful. Works well. Doesn't work magic, but cuts noise some. Expensive, but a good investment.

Really works. Completely stopped all and potential rattles. I didn't have any being my ride is fairly new. Be careful wirh installation because the foil will give you a mean papercut if not handled properly.

I've always heard that you need to sound deaden a vehicle for best sound, but I never thought it would make a big difference. Well Now Im a believer. It made the radio louder and cut down on road noise too.

Product works fantastic but is very hard to fit inside the doors, took me over 2hr to do each door but well worth the effort

I recently put 2 12s in a nissan extended cab truck and in order to fit the box where the back seats WERE. Yes I stripped out the seats. all plastic, all the trim pieces, sealed 2 vent holes and saw zawed the sheet metal off that holds my jack to the back wall and covered every inch with this stuff and then stuck velcro in the center and all corners to hold carpet that is cut perfect. No road noise from back tires and no more vibratin from that thin sheet metal on the back wall. I want to go all out and do as much of the inside of it i can.

Used dynamat on my entire car, first time doing anything like this, very easy to work with, cuts easily, very sticky yet able to pull off and redo if necessary. Use the roller, and wear gloves as the foil can leave nasty paper like cuts.

this is a great option to increasing spl sound quality makes a huge difference in my 61/2s im hearing notes from they i didnt before

Added to front doors and the car is much quieter! Super happy with the difference.

I noticed a huge difference in the amount of bass out of my speakers after lining the doors with this. I'm only running off of two 6x8's in the back and it sounds like i have a sub. I highly recommend that you get this to complete any speaker install

I've used this product before and my only wish is that is was less expensive. It really quiets down the vehicle and makes the stereo sound much better. It is easy to install and fit in all of the curves and sticks without any problems.

Dynamat Xtreme makes a huge difference in reducing road noise and in keeping the sound within the confines of the vehicle. Don't cheap out either. Buy enough to line the 'inside' pockets of your doors. Before doing so I got a tinny, tip tip tip sound while tapping the outside door whereas after I got a nice heavy THUD! Also, remember to install it on a cool day or at night so if you misplace the sheet you can easily peel it off and re-do. By the next day this stuff holds with a death grip. See it installed on my build here.

I had this in my old mustang and in my BMW and it makes a big difference... cleaner sound, better bass, and easy to install

Pretty good product for replacing the sound deadening in your door panels. Not a huge noticeable difference though.

Great product! Installed in my 2008 Altima Sedan. It reduced road noise and speakers in doors do not rattle for me to appreciate the details of my music. Only concern is there seems not to be enough product in the kit according to my installer for full coverage. The same for the trunk kit. Definitely a must to complete a good sounding stereo system. Expensive as hell in retail store but Sonic offers it at a good price that I can afford.

Great product from a great company. This is an absolute must when installing door speakers. Without it you are throwing performance away.

Just an essential part to any hi-end system. It does its job very well. would recommend buying also the rubber roll.

Used it on my '97 honda civic and it went on great! Highly recommended if you have any rattling noise! I noticed it also reduced outside noise and improved speaker noise!

The Dynamat Xtreme Door Kit has to be the best $$$ to square foot ratio kit that Sonic sells right now....Great value and this stuff really killed the vibrations that I was getting in my doors!!

Although this is for the doors, I used it on my truck lid and I have to tell you, It completely stopped my rattle. I have 2 15" kickers pushing 750 watts each and this stuff eliminated all rattle, just pure bass now. You will not be disappointed.

Dynamat is the best sound dampening equipment that I have ever used. I Have 2 door kits done which covers all of my doors. And I also have a trunk kit done in my car. And i can't hear any rattling at all, in or outside of my car.

I bought this for my doors on a 2001 neon.I had already done under the headliner,trunk,and back dash.When I did the doors with this it knocked down the noise better then everything else.Buy this product for shure!Also buy the roller so you dont wear your fingers raw installing.

I have this kit installed on my 2005 Dodge ram under my box with two 10" subs. It shields any rattling around the box which I built into the cab under the rear seats.
You can use the strips anywhere - very flexible.