Dynamat install (long)...

MCH 2.7t · 04-04-2005, 07:15 AM

I completed my Dynamat project over the weekend while installing new window guides in the front doors.

Dynamat is a sound deadener used by the car stereo industry to decrease interior noise and increase the sound quality of car stereos. Its also good for reducing road noise and exhaust drone. Dynamat consists of a thick aluminum foil coated with a layer of asphalt sound deadener. Its available at Car Toys, Best Buy, etc. However, its much cheaper if you buy it online at a store like carstereoonline.com. There are also many alternatives available. Do a Google search on Dynamat and you'll find plenty of alternatives listed.

I started by doing the spare wheel well and trunk deck. The wheel well and deck can act like a giant speaker. Applying Dynamat here can make a significant change.

This did quite a bit to take the edge off of road and exhaust noise. I then did the rear wheel wells, under and behind the rear seat, and the floor boards. The front and rear seats come out easily and has been documented multiple times here (thanks to BD for his great write-up on removing the front seats). Lifting the carpet involves removing some trim around the doors and is fairly easy and straight forward. All-in-all, I found this to be worth the trouble. The car is quieter and the stereo sounds better.

The final segment of this story was the front doors. Following the excellent write-ups in Stoney's FAQs, I replaced the window guides for the front windows - 1 was broken, another was on its way. While the door was apart, I applied Dynamat to the doors.

In the before picture, you can see the stock sound deadening material. I was actually suprised to see it, as many of the A6 doors I've seen don't have any. In any case, I applied Dynamat over the stock material. Its a little early to tell, but it seems that the door closes with a more solid feel now and that the front speakers sound better.

IMO, if you're interested in improving the interior sound quality of your car, this is a good way to go.

Shaun · 04-04-2005, 07:28 AM

MCH 2.7t · 04-04-2005, 07:33 AM

If you're concerned about weight, you shouldn't drive an A6 ;-)

Shaun · 04-04-2005, 07:36 AM

I just know that every time Dynamat gets mentioned, people talk about how heavy it is. 10-20 lbs on 3800 lbs is nothing and it wouldn't concern me in the least. Based on internet lore, I thought you were going to reply that it weighs 100+ lbs!

For the improvements in sound and sound quality, it sounds like a winner to me... :>)

MCH 2.7t · 04-04-2005, 07:58 AM

Shaun · 04-04-2005, 08:30 AM

Boston Driver · 04-04-2005, 09:40 AM

GBW · 04-04-2005, 09:45 AM

Ernesto (ERT) · 04-04-2005, 11:37 AM

How did you get the material to stick? Also, on the doors, did you take care of the front and rear doors?

Come summer time, I might do the same on my car. Depends how the new set of summer rubber sounds compared to the thunderous SO3's that I run now.

MCH 2.7t · 04-04-2005, 12:10 PM

Trunk - 2-3 hours
Under and behind rear seat - 2-3 hours
Floor boards - 6 hours
Front doors (w/window guide replacement) - 1.5 hours each

04-04-2005, 07:15 AM	#1
MCH 2.7t Member Account #: 68483 Join Date: Jan 2004 Posts: 2,180	Dynamat install (long)... I completed my Dynamat project over the weekend while installing new window guides in the front doors. Dynamat is a sound deadener used by the car stereo industry to decrease interior noise and increase the sound quality of car stereos. Its also good for reducing road noise and exhaust drone. Dynamat consists of a thick aluminum foil coated with a layer of asphalt sound deadener. Its available at Car Toys, Best Buy, etc. However, its much cheaper if you buy it online at a store like carstereoonline.com. There are also many alternatives available. Do a Google search on Dynamat and you'll find plenty of alternatives listed. I started by doing the spare wheel well and trunk deck. The wheel well and deck can act like a giant speaker. Applying Dynamat here can make a significant change. This did quite a bit to take the edge off of road and exhaust noise. I then did the rear wheel wells, under and behind the rear seat, and the floor boards. The front and rear seats come out easily and has been documented multiple times here (thanks to BD for his great write-up on removing the front seats). Lifting the carpet involves removing some trim around the doors and is fairly easy and straight forward. All-in-all, I found this to be worth the trouble. The car is quieter and the stereo sounds better. The final segment of this story was the front doors. Following the excellent write-ups in Stoney's FAQs, I replaced the window guides for the front windows - 1 was broken, another was on its way. While the door was apart, I applied Dynamat to the doors. In the before picture, you can see the stock sound deadening material. I was actually suprised to see it, as many of the A6 doors I've seen don't have any. In any case, I applied Dynamat over the stock material. Its a little early to tell, but it seems that the door closes with a more solid feel now and that the front speakers sound better. IMO, if you're interested in improving the interior sound quality of your car, this is a good way to go. __________________

04-04-2005, 07:28 AM	#2
Shaun Super Moderator Account #: 388 Join Date: Mar 2000 Posts: 9,746	Nice project. How much weight do you think it added? Is it noticeable? Just curious. __________________ *-Shaun* 2001 A6 2.7TQ 6spd Ming / Royal / Vanilla EPL Stage 2 (+ custom tuning) Milltek Exhaust Eibach Prokit System A6 4.2 Sport Wheels ToyGuy SSK "A noble spirit embiggens the smallest man"

04-04-2005, 07:33 AM	#3
MCH 2.7t Member Account #: 68483 Join Date: Jan 2004 Posts: 2,180	10-20lbs. I don't think its noticeable. Besides... If you're concerned about weight, you shouldn't drive an A6 ;-) __________________

04-04-2005, 07:36 AM	#4
Shaun Super Moderator Account #: 388 Join Date: Mar 2000 Posts: 9,746	Oh, I hear ya, and that's not too bad at all... I just know that every time Dynamat gets mentioned, people talk about how heavy it is. 10-20 lbs on 3800 lbs is nothing and it wouldn't concern me in the least. Based on internet lore, I thought you were going to reply that it weighs 100+ lbs! For the improvements in sound and sound quality, it sounds like a winner to me... :>) __________________ *-Shaun* 2001 A6 2.7TQ 6spd Ming / Royal / Vanilla EPL Stage 2 (+ custom tuning) Milltek Exhaust Eibach Prokit System A6 4.2 Sport Wheels ToyGuy SSK "A noble spirit embiggens the smallest man"

04-04-2005, 07:58 AM	#5
MCH 2.7t Member Account #: 68483 Join Date: Jan 2004 Posts: 2,180	I suppose if you put 5 layers down it might be 100lbs - it might even make the car bullet proof! :^) __________________

04-04-2005, 08:30 AM	#6
Shaun Super Moderator Account #: 388 Join Date: Mar 2000 Posts: 9,746	Add a few more layers for the perfect suspension drop. Lol __________________ *-Shaun* 2001 A6 2.7TQ 6spd Ming / Royal / Vanilla EPL Stage 2 (+ custom tuning) Milltek Exhaust Eibach Prokit System A6 4.2 Sport Wheels ToyGuy SSK "A noble spirit embiggens the smallest man"

04-04-2005, 09:40 AM	#7
Boston Driver AudiWorld Expert Account #: 69482 Join Date: Feb 2004 Location: Lexington, MA Posts: 26,765	WOW! Nice work! __________________ 2002 A6 4.2 Sport...with a few things added

04-04-2005, 09:45 AM	#8
GBW AudiWorld Senior Member Account #: 81787 Join Date: Sep 2004 Posts: 3,125	How long did this take (short).... __________________ 2001 A6 2.7t 6 Speed Manual (Ming Monster V.2.2): Ming Blue Pearl \| Melange Ambiente Interior \| Premium, Cold Weather, Sport and Preferred Luxury Packages Performance: GIAC X Chip \| Hotchkis H-Sport Sway Bars \| Audi Sport Suspension \| 4.2 Polished Sport Wheels 17x8 ET35 \| 235/45WR-17 Yokahama sDrive Tires\| Show: S6 Polished Aluminum Mirrors \| 4.2 Door Blades \| RS6 Spoiler \| Magnaflow Tips\| Hella Smoked Tails Comfort: Euro Blind Spot Mirror \| PhatNoise \| Auxiliary Cigarette Lighter \| Coin Holder 2000 A4 1.8t 5 Speed Manual (track beast): Light Silver Clearcoat \| Opal Gray Ambiente Interior \| quattro \| Sport Steering Wheel Performance: GIAC Chip \| PureMotorsports Front Stress Bar \| Hotchkis H-Sport Sway Bars \| Pimpin' A8 Polished 17x8 Wheels \| 225/45-17 BFGoodrich g-Force Sport Tires \| Comfort: PhatNoise \| OEM Heated Seats

04-04-2005, 11:37 AM	#9
Ernesto (ERT) Member Account #: 1585 Join Date: Mar 2000 Posts: 4,085	Very nice... been thinking about doing that on my car. Any special tools? How did you get the material to stick? Also, on the doors, did you take care of the front and rear doors? Come summer time, I might do the same on my car. Depends how the new set of summer rubber sounds compared to the thunderous SO3's that I run now. __________________ _____________________________________ "Life itself is a race, marked by a start, and a finish. It is what we learn during the race, and how we apply it, that determines whether our participation has had particular value. If we learn from each success, and each failure, and improve ourselves through this process, then at the end, we have fulfilled our potential and performed well." Dr. Ferdinand Porsche- 1952 _____________________________________ _____________________________________ _____________________________________ <

04-04-2005, 12:10 PM	#10
MCH 2.7t Member Account #: 68483 Join Date: Jan 2004 Posts: 2,180	Answers (medium)... Trunk - 2-3 hours Under and behind rear seat - 2-3 hours Floor boards - 6 hours Front doors (w/window guide replacement) - 1.5 hours each __________________

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