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Aftermarket Sound Deadener specific to LS400?

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Old 12-09-09, 04:52 AM
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Schnitz
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Question Aftermarket Sound Deadener specific to LS400?

I'm having a fibergalss box built for the drivers side trunk corner next week and wanted to start 'deadening' my car. I'll be adding a set of componenets as well up front.
I will put this in the audio section as well but I mostly want LS specific opinions seeing as this car already has pretty good deadening from the factory.
Old 12-09-09, 05:27 AM
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uhh afaik the places you wanna hit hard are the rear deck and the trunk lid to prevent rattles, but this is NOT from first hand experience.
Old 12-09-09, 06:52 AM
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lexondubs
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Im just started putting "dynamat" in my car a few days ago the only problem areas Ive had with my audio is the trunk lid and rear deck everything else seemed solid enough only problem i have to resolve is the factory sub cover casue it moves like a ****!
Old 12-09-09, 07:18 AM
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trunk and rear deck is def a killer....i also had to remove my taillights and put some fatmat under there also.
Old 12-09-09, 07:25 AM
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Did you use Fatmat everywhere? What's your opinion of it? I've only found negative comments about it.
Old 12-09-09, 07:26 AM
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lexondubs
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Originally Posted by LiCelsior
trunk and rear deck is def a killer....i also had to remove my taillights and put some fatmat under there also.
I might give that a shot 2 my ports are kinds there on my setup
Old 12-09-09, 08:07 AM
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If you need a solid solution to deadening, follow this:

www.sounddeadenershowdown.com

His name is Don, and he provides great customer service. Follow his 25% rule for standard deadening tiles, then use MLV and CCF as needed to serve as your barrier. Its cheaper than "Dynamat", and more effective.

Trust me, this is my world.
Old 12-09-09, 08:14 AM
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LiCelsior
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Originally Posted by Schnitz
Did you use Fatmat everywhere? What's your opinion of it? I've only found negative comments about it.
its alot better than none ill tell u that.

my whole spare tub is fatmatted, parts of my qtr panel, trunk, and behind taillights, inner and outer.

i still have to redo one of the taillights since one piece is still vibrating but inside the cabin i can hear the rear deck vibrating and the speaker cover hitting the glass.
Old 12-09-09, 08:21 AM
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lexondubs
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This 3rd breaklight/factory sub cover is a real pita in the first gens i hav e that foam tape stuff but i doubt it would do anything
Old 12-09-09, 08:31 AM
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lexondubs
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also look up "second skin" dampner seems to be alot of hype about it
Old 12-09-09, 08:34 AM
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LiCelsior
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fatmat was still the best bang for the buck for me....2 rolls 50ft each for 120 iirc...bought like 2 years ago and i still ahve like a good 20ft lol.

my rear deck is gonna have something unique one off thing
Old 12-09-09, 01:17 PM
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im a second skin fan, there's a guy on supramania who stripped most of the asphault out of his car and basically second skinned the entire thing!
Old 12-09-09, 04:03 PM
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SS is awesome, just doesn't make it in bang-for-the-buck. Ant at SS has said it himself, if he weren't in the business of making sound deadener, he would buy Don's (SDS) products.

Asphalt is not the way, again...trust me. Advances in butyl technology and advancements in understanding exactly how to get the desired results has made asphalt completely obsolete.

SS also lists proper MLV and CCF materials, but again at a higher price. Not taking anything away from Ant's business, I love his products. The latest CLD tiles SS has are BLACK, which looks pretty cool if any of it ends up being exposed.

Remember, its not just about the deadening mat or tiles. Use Mass Loaded Vinyl in strategic areas like the trunk floor and panels that are prone to taking in road noise, and use Closed Cell Foam over your panels to serve both as a rattle-stop, and a barrier (in conjunction with the MLV) to actually stop noise. CLD tiles change the resonance of the metal but do not create a barrier. The right solution is multi-tiered. Its also cheaper than buying a crap-ton of deadener tiles, and lighter.
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