Sound damping question?
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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=27382
Printed Date: August 17, 2025 at 5:46 AM
Topic: Sound damping question?
Posted By: S.I.Autosports
Subject: Sound damping question?
Date Posted: February 28, 2004 at 4:57 AM
Just wondering if anyone has an opinion/experience using any kind of sound damping material in a fiberglass car?
Replies:
Posted By: Clean Install
Date Posted: February 29, 2004 at 6:26 AM
have you done a searched in any of the post? I know theres a few on damping, not sure about in a fiberglass car though ------------- If we learn from each success and
each failure, then we can improve ourselves
Posted By: S.I.Autosports
Date Posted: March 01, 2004 at 2:26 AM
yeah i read some of the other posts, but didnt see anything about using it on fiberglass. i was really just wondering if it makes much difference on fiberglass.
Posted By: Clean Install
Date Posted: March 01, 2004 at 2:47 AM
Im not sure, I have never used it....not even on a normal car..plan to though  good luck find some info ------------- If we learn from each success and
each failure, then we can improve ourselves
Posted By: Teamrf
Date Posted: March 01, 2004 at 9:31 AM
Yea you should just be able to use some dynamat or some tsuinami deading on that.
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~The Rookie~
Rookie of the year that is...
Don't let the smoke out of your equiptment..it doesn't go back in.
Posted By: dar1
Date Posted: March 01, 2004 at 7:58 PM
Maybe you should research this alittle more before making an investment in sound damping material as it can be relatively expensive. Check with your car manufacturer and try to find out what they might have used in your car or what they recommend. Much luck with that ... some alternatives to Dynamat check out--fatmat or brown bread, maybe even some discount foams etc from Homedepot...to save money.. just in case
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one love
Posted By: Teamrf
Date Posted: March 01, 2004 at 9:15 PM
If you go cheap on the damping then you might as well go cheap on all of the componets as well. Sound damping is just as important. Why havea nice system if your trunk rattles and everything in your car rattle to the beat of the bass?
-------------
~The Rookie~
Rookie of the year that is...
Don't let the smoke out of your equiptment..it doesn't go back in.
Posted By: S.I.Autosports
Date Posted: March 02, 2004 at 1:14 AM
thanks for the replies. i was wondering if it made as much difference on fiberglass as sheet metal. tim
Posted By: DYohn
Date Posted: March 03, 2004 at 9:38 PM
In some cases it makes more difference in fiberglass. Although dynamat type systems are designed for glueing to sheet metal and to convert vibration into heat, they will also work on fiberglass. However, most vibration from fiberglass is due to resonances in the material itself as opposed to rattles from welds or bolts or unsupported sections like in sheet metal. In many cases, good old spun mat or foam rubber sound deadener - or even carpet - can work wonders on fiberglass panels that are vibrating. Adding mass to them will change their sympathetic resonance frequency to something below audible.
Posted By: Ravendarat
Date Posted: March 03, 2004 at 10:38 PM
It definatly makes a difference on fiberglass cars. I did the entire interior of a 74 stingray and it made a big difference. With that being said I found that Brownbread actually worked better in regards to sticking to the body than the dynamat did because we tried both. I do think that dynamat is the superior brand but Brown Bread made a huge difference and it probally comes down the fact that you wont notice a difference because you will never know what dynamat would have done for you so the brown bread will be more than sufficient. What kind of car is this anyways
Posted By: BubbasHouse
Date Posted: March 05, 2004 at 12:37 AM
Damping material is forgiving. If the area you are attaching to is smooth you should have no problems and your ride could quiot down quite a bit depending on how much you use. The problem with fiberglass is when the surface is not smooth. Taunnue covers are horible to try to deaden. Bonding area is less than half the total surface area. Good luck
Posted By: BubbasHouse
Date Posted: March 05, 2004 at 12:38 AM
my spelling can be horrific at time too.
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