Sound deadener

[jayfox911]

I have never used any of these but here is what i have researched....

I have heard of people using housing roof material as a substitute for dynamat.

others:
http://www.raamaudio.com/index.php?page ... t&Itemid=3

http://www.edesignaudio.com/product_inf ... ucts_id=51

http://www.fatmat.com/kits/rattletrap/trunk.html

[MasterFoo]

Installed the big roll (Trunk and underseat).

The smell doesn't bother me...or I haven't even noticed it.

The back bench removal was a bit of a pain in the a**. The trick is to find to pull the tab with a stick like object (instead of fingers, better leverage IMO) and pull the seat UP. Comes right out.

Re-installing the seat/bench takes a bit of muscle and slapping.


Sound: I haven't noticed a major difference, I guess I would have to do all the panel and floor to actually feel a difference.

[dorlandm]

Boy I hope you do notice some differance? Maybe just in the thud over pot holes? Also, this stuff does not stink! If you ever put a wet suit on it does not have an oder worth talking about!

Hope you do hear a differance at some level.

Mark

[WirelessAndy]

Just received the SecondSkin "Luxury Liner Pro" material.

This stuff is HEAVY! The UPS package weighed 44 lbs for four sheets.

The sheets are lying around my office in various unflattering poses (two draped over a desk, one slumped over a footrest, one "hiding" behind a chair. It looks like some mats are hung over after a party.) I hope to let them air out a bit.

The aroma is less "gasoline" smelling. It's more of a vinyl shower curtain smell. Hopefully the smell goes away.

I think tonight I'll let them air out in the garage until the weekend when I MIGHT have a chance to try this material.

[WirelessAndy]

Update: I installed the Luxury Liner Pro material.

This time I lined the trunk, under rear seat cushion and floor mats. I got a 7dB reduction overall.

(I know last time I didn't do the rear seats, but that 3/4" stuff is too thick for under the seats.)

The Luxury Liner Pro stuff is much easier to work with and far less stinky. I let it air out for about two days.

[dorlandm]

Hi Wireless Andy:

Glad it worked well. How much did it cost? That can be the big deterant! Anyway glad it killed some noise for you!

[WirelessAndy]

Not cheap. 4 sheets for $155. That gets you 36 sq feet.

[dorlandm]

Not outragious! I have sent more money more foolishly

Love the car as it keeps running like a champ!

[WirelessAndy]

And vs. the neoprene, boy is this stuff HEAVY.

[walkerl]

Has anyone tried to put this stuff in the doors themselves?

[TDot]

The instant I started reading this I thought about the doors as well, especially since it seems no one can get the front done properly.

[mexillis]

About to try and use something to decrease road noise in the front part of the car, does anyone think if I put it in the wheel wells it will work or does it need to go under the floor up front to work better? Im not sure if it's my falkens or my quiet exhaust set up but it seems louder than I remember with the music down.

[TDot]

This is not what you need for what you want. What you want is "mass load vinyl". As far as where to place it is the magic question. I placed it underneath the front foot area, and up halfway the front firewall area and didn't notice that much difference....obviously, sound radiates. If you were to do this for your reasons, I would suggest you do the ENTIRE floor and up the firewall and wheel wells or don't bother. Because unless you truly get the results of reduced noise, the weight gain you pick up with MLV will be a waste if you don't do it properly. I believe to cover the entire floor you might be adding 20-30lbs and I would suggest two layers. But like I said, sound radiates, so I'd just do the entire cabin minus the roof, the doors I'd just do one layer. Sound deadened/dynomat is NOT what you want for this. You might also look into expanding foam, I hear it helps as well although I've never used it.

[svard75]

About to try and use something to decrease road noise in the front part of the car, does anyone think if I put it in the wheel wells it will work or does it need to go under the floor up front to work better? Im not sure if it's my falkens or my quiet exhaust set up but it seems louder than I remember with the music down.

Sound deadening mats are intended to be installed internally away from road, sunlight and extreme temps. Typically they are a form of asphalt which can harden over time in extreme temps and fall off. These mats reduce noise mostly by reducing metal vibrations that's why they are heavy. For the outside use the exterior asphalt sprays however the wheel wells are not where the noise is generated from unless you have mega crap tires that are noisy which most of us don't have. It's the transfer of road noise through the chasis via the suspension components. Car manufacturers try to reduce this by installing soft rubber bushings between components as much as possible and we have the subframe bushings as well.

If someone were so inclined to really go nuts the best way to reduce noise in any car is to completely strip it of all interior things down to painted metal, then line every inch with a good quality asphalt based mat including all pillars, doors, roof, etc and follow up the floor with the OEM stuff. Only problem with this is the additional weight you would be adding. Another tradeoff. Everything in cars is a tradeoff unless you get into the supercars or ultraluxury where they use real wood trim and no expenses spared http://www.couturecustoms.mobi/photos.a ... 2&dlr=5348

[svard75]

This is not what you need for what you want. What you want is "mass load vinyl". As far as where to place it is the magic question. I placed it underneath the front foot area, and up halfway the front firewall area and didn't notice that much difference....obviously, sound radiates. If you were to do this for your reasons, I would suggest you do the ENTIRE floor and up the firewall and wheel wells or don't bother. Because unless you truly get the results of reduced noise, the weight gain you pick up with MLV will be a waste if you don't do it properly. I believe to cover the entire floor you might be adding 20-30lbs and I would suggest two layers. But like I said, sound radiates, so I'd just do the entire cabin minus the roof, the doors I'd just do one layer. Sound deadened/dynomat is NOT what you want for this. You might also look into expanding foam, I hear it helps as well although I've never used it.

Sounds like it almost wouldn't be worth doing it at all. I agree weight gain is a huge factor in noise reduction plus cost. Expanding foam wouldn't do squat. You want open cell foam not closed cell foam.

[mexillis]

seems like some people who have installed these type of products have experienced a more quiet cabin. I have Falken Azenis FK453 which arent the lewest quality but i can def hear them as i start moving. Static weight really isnt a problem esp since our car is already heavy and Im not a huge person so adding 30lbs of material wouldnt do s*** lol.

[svard75]

I still can't believe a little bit of the stuff on the drivers floor boards would make that much difference. Did those people use db measuring apps to prove this and was the testing performed exactly the same? I mean today the street you drive on could be more noisy then the next day after applying the stuff.

[Larz]

I experienced moderate noise in my 07 M. The trouble was the rattle in the rear shelf with loud music, unpleasant tire noise, and noticeable road noise at high speeds - mostly in the rear passenger area. I fixed the road noise with matting on the trunk floor and tire well. After switching from Michelins to Ventus S1noble2 tires, the tire noise was virtually gone at all speeds. I fixed the rattle in the rear shelf by painting two tennis balls black to match my interior and firmly pushing them between the rear windscreen and both sides of the rear mounted stop light. I called it 'redneck rattle control'.
My 09 M has very little noise aside from wind and only at at high speeds. The rear shelf does not rattle even with music extremely loud. I reckon it's because the 09 has a rear sun shade which I assume required a more rigid or better designed rear shelf to accommodate the sun shade mechanism. The only road/tire noise that is noticeable is while driving on bridges and nothing can fix that.
I concur with Svard. I doubt that dismantling the doors, seats, and flooring will make much difference. I DID notice a significant reduction in the rear area after matting the trunk floor and tire well of my 07, but the biggest reduction in cabin noise wasafter changing tires.

[svard75]

Hey Larz, not sure if this is in fact the case but perhaps BOSE does a better job of performing noise cancellation in the newer versions. Is it quieter even with the radio completely off? I know my 06 is noticeably less environmentally noisy when my radio is playing because the amplifier increases the lower end volume to compensate for equivalent road noises. Especially if I drive with my windows open you can sometimes hear how unnatural the low end becomes lol.

[poohouze]

Larz,
can you post a pic of what you did to get rid of that red nek rattle? Im in serious need of ending that rattle!
"I fixed the rattle in the rear shelf by painting two tennis balls black to match my interior and firmly pushing them between the rear windscreen and both sides of the rear mounted stop light. I called it 'redneck rattle control'."

[TDot]

Expanding foam wouldn't do squat.

I agree, I've never understood how this can really make a difference, but people say it works so I put it out there. But my 2 cents I wouldn't bother.

You want open cell foam not closed cell foam.

Yes, but not as the main source for what he is trying to accomplish. I stand by MLV. MLV will act as a true barrier which will help with the lower drone frequencies of road noise. Foam absorbs. So unless you are going to be layering it quite a few times, I do not believe it will help for the lower frequencies of road noise. Both of them together will be great though, that's what I did for my audio set up.

But to reiterate what svard and I said, unless you plan on pulling everything out and doing it properly, it will be a waste of time to begin for what you want.

Good luck with whatever you decide.

[Larz]

Hey Larz, not sure if this is in fact the case but perhaps BOSE does a better job of performing noise cancellation in the newer versions. Is it quieter even with the radio completely off? I know my 06 is noticeably less environmentally noisy when my radio is playing because the amplifier increases the lower end volume to compensate for equivalent road noises. Especially if I drive with my windows open you can sometimes hear how unnatural the low end becomes lol.

With the radio OFF and the windows closed:
There is slightly more noise in the cabin - definitely much less than the 07 M - seems to be coming from the wheels more so than the transmission, engine, etc.

With the radio OFF and the windows open:
More noticeable and it's definitely coming mostly from the tires (the car came with Goodyear Eagle RSA 245/45/18).

At higher speeds with and without windows open and radio OFF:
Mostly wind noise with traces of tire noise (the wind noise seems to drown out the tries noise).

I already planned to replace the tires with a better quality like Pirelli, Ventus, or Continentals. Just waiting to get more wear on these Goodyears before chucking them.

[Larz]

Larz,
can you post a pic of what you did to get rid of that red nek rattle? I'm in serious need of ending that rattle!
"I fixed the rattle in the rear shelf by painting two tennis balls black to match my interior and firmly pushing them between the rear windscreen and both sides of the rear mounted stop light. I called it 'redneck rattle control'."

Unfortunately, I cannot post a pic as that car was totaled September last year. Just paint two tennis balls to match the color of your rear shelf, place one on each side of the upper brake light and push them until they are wedged firmly between the rear glass and the shelf. They will absorb the vibration so the shelf will no longer rattle. The tennis balls will have a slight aroma of paint for a few days but that goes away if you leave them in open air before you install them.

[svard75]

Larz,
can you post a pic of what you did to get rid of that red nek rattle? I'm in serious need of ending that rattle!
"I fixed the rattle in the rear shelf by painting two tennis balls black to match my interior and firmly pushing them between the rear windscreen and both sides of the rear mounted stop light. I called it 'redneck rattle control'."

Unfortunately, I cannot post a pic as that car was totaled September last year. Just paint two tennis balls to match the color of your rear shelf, place one on each side of the upper brake light and push them until they are wedged firmly between the rear glass and the shelf. They will absorb the vibration so the shelf will no longer rattle. The tennis balls will have a slight aroma of paint for a few days but that goes away if you leave them in open air before you install them.

LOL this is brilliant for two reasons. 1 it reduces rattle and 2 in case you manage to hit all your tennis balls out of the court into someones backyard you've got 2 extras in the car