Use Dynamat or not

2fast4thelaw · 12-28-2009, 06:05 PM

To be honest I couldn't stand the road noise from the Z until I deadened it. The roads in Colorado are very noisy so I dealt with a constant roar. I did it primarily for driving comfort than audio performance. I have a performance exhaust system and it droned really bad with the windows up. Afterwards, the exhaust drone was gone and it is quieter than the stock exhaust now inside the car. It really gave the car much more refined driving experience by vastly reducing the road and exhaust noise to a very tolerable level. I do notice much tighter and more controlled bass than before. I also dont need to turn it up when I hit the hiway.

You can use smaller amounts of Dynamatt and applying it stratigicaly. Most people including myself use more than necessary. I used large sheets of it on the doors to both seal and deaden the door. I put in about 120 sq ft of it and about the same amount of ensolite.

I highly recommend using ensolite (1/8" dense closed cell foam) to apply all over to further aid in noise suppression. Its relativly inexpensive and its easy to apply. You just need scissors and a few cans off good spray adheisive.

mototrmpt · 12-29-2009, 12:52 AM

I also think that everyone will have their own opinion, but 'm with 2fast. I have a base model with no mods and I found the road noise to be way too much. I know it's a sports car, but I don't intend to race it. I've added 40 sqft of second skin's damplifier in the doors, floor and rear area and then put 9 sqft of luxury liner in the rear area. The shipping weight of the package from second skin was 27 lbs. In hindsight, I wish I would have used the damplifer pro material.

The car certainly isn't luxury car quiet, but it's pretty reasonable and you can even hold a conversation with a passenger at freeway speeds. I think if you're adding sound equipment with the additional weight over the base stuff, then you're kidding yourself on keeping the weight off by not using the sound deadening materials. I suggest you go ahead and use the dynamat, add the sound equipment and just make sure you don't add the 150 to 225 lbs passenger.

12-28-2009, 06:05 PM	#1 (permalink)
2fast4thelaw Enthusiast Member Join Date: Feb 2009 Location: Denver Co Age: 50 Posts: 403 Drives: 09 370Z Sport/MT6 Rep Power: 17	To be honest I couldn't stand the road noise from the Z until I deadened it. The roads in Colorado are very noisy so I dealt with a constant roar. I did it primarily for driving comfort than audio performance. I have a performance exhaust system and it droned really bad with the windows up. Afterwards, the exhaust drone was gone and it is quieter than the stock exhaust now inside the car. It really gave the car much more refined driving experience by vastly reducing the road and exhaust noise to a very tolerable level. I do notice much tighter and more controlled bass than before. I also dont need to turn it up when I hit the hiway. You can use smaller amounts of Dynamatt and applying it stratigicaly. Most people including myself use more than necessary. I used large sheets of it on the doors to both seal and deaden the door. I put in about 120 sq ft of it and about the same amount of ensolite. I highly recommend using ensolite (1/8" dense closed cell foam) to apply all over to further aid in noise suppression. Its relativly inexpensive and its easy to apply. You just need scissors and a few cans off good spray adheisive. __________________ To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the engineer, the glass is twice as big as it needs to be.

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12-29-2009, 12:52 AM	#2 (permalink)
mototrmpt Base Member Join Date: Nov 2009 Location: Salt Lake City Posts: 57 Drives: 09 370Z M6 Rep Power: 16	I also think that everyone will have their own opinion, but 'm with 2fast. I have a base model with no mods and I found the road noise to be way too much. I know it's a sports car, but I don't intend to race it. I've added 40 sqft of second skin's damplifier in the doors, floor and rear area and then put 9 sqft of luxury liner in the rear area. The shipping weight of the package from second skin was 27 lbs. In hindsight, I wish I would have used the damplifer pro material. The car certainly isn't luxury car quiet, but it's pretty reasonable and you can even hold a conversation with a passenger at freeway speeds. I think if you're adding sound equipment with the additional weight over the base stuff, then you're kidding yourself on keeping the weight off by not using the sound deadening materials. I suggest you go ahead and use the dynamat, add the sound equipment and just make sure you don't add the 150 to 225 lbs passenger.