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sound deadener, dynamat

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=94027
Printed Date: May 13, 2024 at 4:24 PM


Topic: sound deadener, dynamat

Posted By: lincoln2002lse
Subject: sound deadener, dynamat
Date Posted: May 18, 2007 at 8:03 AM

Hi all,

Been awhile since I posted but now that I am off restriction I am back again seeking advice, opinions and thoughts. Restriction was I could only play with the toys I had for awhile so I was okay with dealing with what I had to do with them. (Restriction came from when the wife found the receipts for the morel low profile speakers) man, she was tweaked but wow do they add what I needed to hear.

Let’s talk sound deadening. If you had a grand and really did not want to go much over that but need to kill the rattles and road noise in say for example,, not to be tooo specific but a Shiny Black 2002 Lincoln LSE with ground effects (lol) . You wouldn’t think a car along that line would rattle but it does, you wouldn’t think the road noise would be as loud, but with low profile tires and the fantastic road conditions of say,, TX, La, Miss, Ala, Fla gulf coast,,, it does.

I also got a tone generator program which I played on my laptop with a PCMCIA Creative Audigy Z2S sound card, hooked to the Eclipse AVX5000 head unit in the car and of course the low freqs really pin pointed the gross sounds we all have nightmares about. My jaw dropped, my heart pounded, I think I almost broke out in a sweat, and my respect for high end ford went right into the toilet. Yes you are right it is an “older” car now but it is some-ones baby, and she lets me play with it (as long as I ask real nice) she is however a little concerned of my mental state. I think I have reached the 20k point with the system and more is still to come.

So back to the point of this lil story,, I need some anti rattle, anti vibration, anti road noise, killer sound deadener stuff. Any recommendations? I don’t care if it is paint on, spray on, or stick on, I cannot do spot welds because of the paint. There is dynamatt extreme of which I already have some but not enough of (series) Fat Matt, secondskin, and I am sure the list goes on and on. I am ready to rip out the seats ,again, pull up the carpet, again, and pop the trunk, again, since the amps are on a tray in the trunk (as in “funk in the trunk” https://www.cardomain.com/ride/822243/3 the main hook up is almost modular.

I live in the south so there is a high temp problem so the material containing the asphalt I think I had better be very careful about, (Guys if I get tar balls on her carpet she is going to flat out string me up) she’s still having problems with the smell of the fiberglass mods I had to do for the sub box, it did do wonders for the hit of the JL 10w6’s pushed by the JL 1k/1, still tweaking that too by the way.

Don’t care about the cute little sticker stuff that comes with stuff cause I don’t want the entire town to know what I got wrapped up in the car. The kids that pull up next to me with their rattle rattle little boom boom (gys tht crp is NOT cool) deserve the crystal clear ear blast they get from an old fart they never would have expected it from, LOL

Hey,,, Forbidden, really hope to hear from you on this, and thks again for the avx/dcu info.




Replies:

Posted By: xtremej
Date Posted: May 18, 2007 at 9:45 AM
Well we have been using hushmat. Its not real flashy as its sound deadner but its easy to apply and I don't think you'll get tar balls off of it. A grand is going to get you alot of it. I haven't used any spray stuff like second skin so I don't have a comment on it.




Posted By: snhtown
Date Posted: May 18, 2007 at 11:18 AM
i dont know much about deadner, maybe truck bed liner?  but i sure do love that amp rack, is that a simple peice for rising and lowering it? or did they get creative and made it from scratch?




Posted By: sedate
Date Posted: May 18, 2007 at 11:29 AM

Everyone I've ever talked to about the spray stuff tells me things like "its really messy and didn't do much" or some such negative comment.  But, I've never used it either.  I have had however, *excellent* results from those little $4 cans of "Great Stuff" ... that expanding foam sealent you get at Home Depot.  Obviously it wouldn't line sheet metal per se, but spraying into little pockets of sheet metal.. like the door trunk lid.. has gotten me some pretty impressive results for a $4 part.

There has been a proliferation of "me too" parts that have surfaced in the face of Dynamat's exceptional products and success... here I would probably tell ya to go with the original... Dynamat Extream.  $300 would get ya two cases.... plenty for an entire trunk and a couple of doors.  Even in a car as large as a Lincoln..



-------------
"I'm finished!" - Daniel Plainview




Posted By: lincoln2002lse
Date Posted: May 18, 2007 at 11:56 AM

The link I included in my post is of a system I have copied from, but with minor changes, such as: cooling fans located under each amp, with air gap under each for flow, powered by remote 12v,  trimed the corners so it looks kinda like the superman symbol border and allows the tray to sit lower, than the original tray shown in photos, instead of caps between the amps, I loaded yet another amp there,, (JL 300/4 for the highs) 450 for the mids, (3 sets-Focal K2P) yea I went active, and 1000/1 for  2 10w6-v2's, in a bigger 3/4 MDF and fiberglass made by me box, SEALED, no big frame required for lifting tray, still need to do the lifts but,,, maybe not. ((NO-ONE goes into that area except me,, ever,,,)) as I welded a support bracket inside the spare tire well, and yea I can pull the spare if needed, big three upgrade (of course) 200 amp alt (of course), yellow top,  avx5000 with dcu105, center speaker is clarion 1/2 din flush mounted under head unit, looks like it grew there. The biggest hurdle for the trunk was getting the 450/4 and 1000/1 positioned for adding the 300/4 with out crowding the sub box. So the one that is pictured was built by someone else, for someone else.

I agree totally Mine may not be called original but,, I DID IT  maybe even better.

I called the guys that did the original and was going to have them do mine even though it meant a 18 hour drive and loss of my car for a good while,,, but nooo,, they decided to be rather un-friendly and a bit arogant. Mine is smaller better ventalated and and the corners mate,,lol. no ugly metal two bit straps. (Full blown cabinet shop on my property)

So back to the sound deadener,,,,, I know 1k isn't much but,,,, I don't want to be on restriction again.

Wife wants to know when it will be done,,,, lol ,,, ,,,,,Is that even possible??????





Posted By: zhalverson
Date Posted: May 18, 2007 at 1:24 PM
Use a butyl based deadener.  Dynamat extreme, Raamaat, and some others.  With dynamat you are paying for the name but it is a good product.  On the other hand if you go with a lesser known brand like Raamaat you can use alot more for the same money.  I would suggest using a closed cell foam as well on the back sides of the doors at least.  Really cut down on road noise for me.  Tightening bolts might help with some rattles.  Do some searches as well as their are many threads on this.  $1000 should be plenty to get that thing real quiet since you're doing it yourself.  The big investment is time and patience, it gets old real fast and it takes while.




Posted By: audioman2007
Date Posted: May 19, 2007 at 9:09 AM
Well lets say that you dont have money to spend on dynamat and so on. Is it possible to use foam to stuff in your trunk and so on to help with rattles? I have loads and loads of foam out in my workshop that I was hoping I could use for my car.




Posted By: lincoln2002lse
Date Posted: May 19, 2007 at 9:21 AM
Loads of foam,,, well, is it open or closed cell?, does it retain moisture? causing smells and possible rust, is it flame retardent melting your high dollar gear would be a bad thing I think,  I also thought of the regular foam for typical home carpet,, but the moisture problem has me turned off on the idea.




Posted By: audioman2007
Date Posted: May 19, 2007 at 9:43 AM
Well I have different kinds of foam. I have tons of the foam thats say 1/2 inch to 5/8 inch thick that is very squooshy. I know that stuff holds in moisture. I also have some of the foam that is maybe 1/4 inch thick, is white and glossy, somewhat hard to squeeze, and sometimes you can hear "it" popping when you do squeeze it. If any of that helps? I want to put foam up inside my trunk lid and rear deck. Give me some ideas on what to do. I dont want to go buy dynamat or anything like that. I really want to use up the foam




Posted By: lincoln2002lse
Date Posted: May 19, 2007 at 9:55 AM

I would compare this https://www.raamaudio.com/cgi-bin/index.cgi?p=pr to what you have on hand and then go from there. It is your car and your gear and half the fun of doing this stuff is checking things out. I put regular home padding in my car when I was a kid and it was fine,,, for awhile,,,,,, at the time I basically lived at the beach,, so ,,, ever open a car door and smell fish?????????????????





Posted By: zhalverson
Date Posted: May 19, 2007 at 1:10 PM
I didn't mean to only use foam.  I don't think that's going to really cut down a whole lot on vibrations and rattles.  Never tried it with just foam though so I don't know.  Open cell foam is probably pretty bad idea too.  If it absorbs water I would try to keep it out of your car as much as possible.




Posted By: jvillefinest
Date Posted: May 19, 2007 at 1:23 PM
If you have the money i would def. go with the dynamat. You can pick it up at a local shop with HUGE amounts of markup on it or you can def find it online for a better price. im not a big fan at buying things online but in this case its one of those things your not going to return and there isnt going to be a defect so why not. I have two of the bulk kits in my truck and it covered everything. All 4 doors the roof and floor with one nice layer. I have seen some that do more then that and its one of those things the more there is the better it works. Just watch weight the stuff is heavy and if you care about weight it adds up fast. as far as the great stuff and other things you can pick up at a hardware store, you can find uses for them in a car because sometimes there are places that rattle that dynamat just isnt going to work on. So i would say first dynamat then get creative with the rest. Rattles are just things that will take time and patience but they can be worked out.


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2007 Acura TSX
SQ setup in the works




Posted By: zhalverson
Date Posted: May 19, 2007 at 1:32 PM

I personally don't like paying for a name when there are other quality products out there to have for less.  Do not get the dynamat original because that is still asphalt based and way overpriced.  Check out this link: https://www.sounddeadenershowdown.com/

There's probably improvements and changes in products since that article but it has some good info.  RAAMaat worked great for me and the customer service was good as well.






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