Soundproofing w124 better?
Thread Starter
MBWorld Fanatic!
Joined: Apr 2007
Posts: 2,381
Likes: 29
E
Soundproofing w124 better?
Has anybody here ever tried to soundproof your cars better?
The w124 is reasonably quiet....what else could we do to make it even more silent?
I heard somewhere that putting soundproofing mat below the hood pad makes a big difference. I'm probably going to do that when I get round to putting my new hood pad on because I gotta put it back on anyway.
What about putting some Dynomat or something similar behind the door panels?
Any other ideas of where most noise seeps through?
The w124 is reasonably quiet....what else could we do to make it even more silent?
I heard somewhere that putting soundproofing mat below the hood pad makes a big difference. I'm probably going to do that when I get round to putting my new hood pad on because I gotta put it back on anyway.
What about putting some Dynomat or something similar behind the door panels?
Any other ideas of where most noise seeps through?
Last edited by ps2cho; Oct 15, 2008 at 05:54 PM.
MBWorld Fanatic!
Joined: Mar 2005
Posts: 2,647
Likes: 8
Youngtimer
i rode around with no front floormats (the foam ones under the regular mats) when i was in the middle of putting in my stereo, and i was surprised by how much noise came through... the foam blocks most of the sound, but i would say if you could dynamat the floor as much as possible it would help a lot...
for the hood, see if you can get that dynamat foam spray stuff, supposedly it stands up well to heat and what have you... never actually seen it in action though. i think if you could somehow get more soundproofing on the firewall it would help more than under the hood...
for the hood, see if you can get that dynamat foam spray stuff, supposedly it stands up well to heat and what have you... never actually seen it in action though. i think if you could somehow get more soundproofing on the firewall it would help more than under the hood...
MBWorld Fanatic!
Joined: Mar 2006
Posts: 1,246
Likes: 3
From: North NJ
94 Wagon and 94 Cabriolet
My 89 Coupe has thick and or double dynamat EVERYWHERE below the windows, doors, below seats, everywhere.
Car is unbelievably quiet. But it was before all that work too.
Car is unbelievably quiet. But it was before all that work too.
Thread Starter
MBWorld Fanatic!
Joined: Apr 2007
Posts: 2,381
Likes: 29
E
I think for now I'll start with some dynomat or another cheaper brand's hood liner. I will then put my OEM Benz hood pad over the top of it so it doesn't look corny and I ensure that my paint is protected fully from the heat.
From there maybe I'll go to the driver/passenger floors.
From there maybe I'll go to the driver/passenger floors.
MBWorld Fanatic!
Joined: Feb 2006
Posts: 1,325
Likes: 2
From: Seattle
1990 300ce
Dynamat is WAY overpriced. I used Second Skin Audio's damplifier pro:
http://www.secondskinaudio.com/vibra...lifier-pro.php
Do not get the asphalt/tar-based stuff. It smells and it doesn't hold up as well.
I know that some years of 124's have more sound-proofing than others. I know I came across a lot of factory soundproofing materials when I was doing my installation. For example, on the driver and passenger floors, there was this rubbery/plastic molded material with foam underneath it. I had to tear that stuff out and scrape all of the foam off of the sheet metal floor before applying the damplifier.
Do research on this topic. But the one biggest piece of advice I can give you is this: Make sure you get a good bond directly on sheet metal. This stuff works by reducing the vibration of the metal interior pieces of yoru car. Sound passes into the cabin through the sheet metal due to vibration.
Your car is old, so there will be grime and other crud you have to clean off before proceeding.
It's a tedious process, but don't cut corners. Make sure you carefully keep track of all of the interior pieces that you have to take out of your car so that you don't break or lose anything.
By far, the most vast improvement I have noticed was from putting two layers of damplifier pro on the floor... this required me to pull out the seats and everything.
The silly thing is that I went through all of this trouble, but the biggest improvement I could've made for noise would've been to go back to my stock rims and tires... low profile tires cause much more noise. But I like the way they look so what are you gonna do!?
Good luck.
http://www.secondskinaudio.com/vibra...lifier-pro.php
Do not get the asphalt/tar-based stuff. It smells and it doesn't hold up as well.
I know that some years of 124's have more sound-proofing than others. I know I came across a lot of factory soundproofing materials when I was doing my installation. For example, on the driver and passenger floors, there was this rubbery/plastic molded material with foam underneath it. I had to tear that stuff out and scrape all of the foam off of the sheet metal floor before applying the damplifier.
Do research on this topic. But the one biggest piece of advice I can give you is this: Make sure you get a good bond directly on sheet metal. This stuff works by reducing the vibration of the metal interior pieces of yoru car. Sound passes into the cabin through the sheet metal due to vibration.
Your car is old, so there will be grime and other crud you have to clean off before proceeding.
It's a tedious process, but don't cut corners. Make sure you carefully keep track of all of the interior pieces that you have to take out of your car so that you don't break or lose anything.
By far, the most vast improvement I have noticed was from putting two layers of damplifier pro on the floor... this required me to pull out the seats and everything.
The silly thing is that I went through all of this trouble, but the biggest improvement I could've made for noise would've been to go back to my stock rims and tires... low profile tires cause much more noise. But I like the way they look so what are you gonna do!?
Good luck.
MBWorld Fanatic!
Joined: Feb 2007
Posts: 1,297
Likes: 1
From: Connecticut, New Haven
95' AMG SeeThreeSix
Stay away from the overpriced brands as Bigpete123 said, I'd recommend Elemental Designs eDead dampening material. At only $1 per sqft you can't go wrong, and they have other versions as well. ED used to have a tar based composition but that has changed to butyl compound, so your good to go!
http://www.edesignaudio.com/product_...products_id=51
http://www.edesignaudio.com/product_...products_id=51
MBWorld Fanatic!
Joined: Feb 2006
Posts: 1,325
Likes: 2
From: Seattle
1990 300ce
butyl... that's right. I was trying to remember the name of that.
Don't get anything unless it's butyl based. Other than that, thickness and weight are the only things you should use to determine which is better... obviously, more thickness and more weight = better.
Don't get anything unless it's butyl based. Other than that, thickness and weight are the only things you should use to determine which is better... obviously, more thickness and more weight = better.
Trending Topics
MBWorld Fanatic!
Joined: Mar 2006
Posts: 1,246
Likes: 3
From: North NJ
94 Wagon and 94 Cabriolet
Big Pete is right on here- also w the comment about wheels.
I am running comfort (quiet) treads on 15s on the new Cab and it is notably quieter / softer than the 17s and 18s.
I am running comfort (quiet) treads on 15s on the new Cab and it is notably quieter / softer than the 17s and 18s.
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
Member
Joined: Mar 2007
Posts: 169
Likes: 2
300TE, 300CE
TE cabin noise
The noise that comes from the back of the TE is what bugs me, in comparison to the sedans. It's a lower frequency "boomy" kind of sound, that really seems to echo in our large wagon cabins.
If I were to attack that, I would apply the sound mat in the spare tire and the washer fluid reservoir wells, and then pull the covering over the rear wheels and the covering over the center floor. And then under the carpet under the second row bench seats.
Have fun
If I were to attack that, I would apply the sound mat in the spare tire and the washer fluid reservoir wells, and then pull the covering over the rear wheels and the covering over the center floor. And then under the carpet under the second row bench seats.
Have fun
