sound deadening
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Joined: Nov 2017
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From: Alexandria, Kentucky
sound deadening
Want to add some sound deadening to the rear of my XF. It's an 05 Limited Coupe. I'm thinking of either Hushmat or Dynamat. Has anyone done this with either of these two products? From what I've read, these are the top two in the business. Correct me if I'm wrong, I can take it! I know these are a little pricey but I don't want to do the job twice. If you have used something else to deaden road noise, please let me know what, and your results. If you prefer to email me, it's jpmlholian@aol.com.
Thanks,
Jim
Thanks,
Jim
Senior Member
Joined: Apr 2006
Posts: 25,432
Likes: 647
From: Ontario
Re: sound deadening
Seriously I have all the trunk out and soon the headliner will be out, Waldig said he got a quieter ride by adding Dynamat to the roof.
I have been thinking about adding some myself, the rear bulkhead has got to be a major contributor to noise, the trunk has some sound deadening material in it already.
Joined: Aug 2017
Posts: 13
Likes: 0
From: Colorado
Re: sound deadening
Don’t cover the whole panel with dynamat. Do little rectangles in the middle 50% of each panel, covering 25% of the panel. Do not link the panels together with dynamat, or you will create a new resonant frequency that your whole trunk vibrates with. That part shouldn’t be too expensive, especially if you get an off-brand.
Then you cover over that with a layer of mass loaded vinyl backed by closed cell foam.
The dynamat dampens vibration. The MLV “blocks” a bit of sound, it’s doing the hard work. The closed cell foam isolates the MLV from the body.
MLV is super expensive, but Home Depot has a cheaper product that works.
Then you cover over that with a layer of mass loaded vinyl backed by closed cell foam.
The dynamat dampens vibration. The MLV “blocks” a bit of sound, it’s doing the hard work. The closed cell foam isolates the MLV from the body.
MLV is super expensive, but Home Depot has a cheaper product that works.
Senior Member
Joined: Apr 2006
Posts: 25,432
Likes: 647
From: Ontario
Re: sound deadening
Don’t cover the whole panel with dynamat. Do little rectangles in the middle 50% of each panel, covering 25% of the panel. Do not link the panels together with dynamat, or you will create a new resonant frequency that your whole trunk vibrates with. That part shouldn’t be too expensive, especially if you get an off-brand.
Then you cover over that with a layer of mass loaded vinyl backed by closed cell foam.
The dynamat dampens vibration. The MLV “blocks” a bit of sound, it’s doing the hard work. The closed cell foam isolates the MLV from the body.
MLV is super expensive, but Home Depot has a cheaper product that works.
Then you cover over that with a layer of mass loaded vinyl backed by closed cell foam.
The dynamat dampens vibration. The MLV “blocks” a bit of sound, it’s doing the hard work. The closed cell foam isolates the MLV from the body.
MLV is super expensive, but Home Depot has a cheaper product that works.
Senior Member
Joined: Oct 2013
Posts: 2,006
Likes: 15
From: Southern IL.
Re: sound deadening
Are you just trying to get ride of the horriblyannoying drone ?
why I redid my exhaust, to get rid of the sharp bends around the rearend, a night and day difference.
The sharp bends just reflect the sound waves back through the pipe.
there are other ways to do the exhaust vs what I did with duals if you do not want exterior tone
why I redid my exhaust, to get rid of the sharp bends around the rearend, a night and day difference.
The sharp bends just reflect the sound waves back through the pipe.
there are other ways to do the exhaust vs what I did with duals if you do not want exterior tone
Joined: Aug 2017
Posts: 13
Likes: 0
From: Colorado
Re: sound deadening
yes, this is a general answer for all panels. Dynamat is just a vibration damper. It’s overused by auto enthusiasts. A little does as much as a full surface covering. An isolated MLV layer has the density to quiet interior sound.
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