Making car quieter - Would I benefit from more sound deadener?
11-28-2004, 10:05 PM
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Making car quieter - Would I benefit from more sound deadener? I have a 2001 SS. Since its a convertible its kind of boomy inside with the top up. Do these cars have much sound deadener in them? I would like to kill some of the exhaust boom from the stock exhaust. Is it worthwhile adding some? What's your favourite inexpensive type.
11-28-2004, 10:20 PM
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i used some roof insulation, i think its called wind and ice or something like that. it works well and costs MUCH less then dynamat. i only did my trunk and the exhaust noise decreased dramatically. i have alot extra but i dont think its worth shipipng because its heavy as hell. but if you need some and you wanna pay for the shipping, send me a pm and i'll get it out for you. i'm in new york down by the city. but definately check out home depot or any other hardware store. o and if you dont like that idea, try searching up this stuff called brown bread. i heard that stuff works great. just my 2 cents 
11-28-2004, 10:23 PM
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Originally Posted by qwikz28
i used some roof insulation, i think its called wind and ice or something like that. it works well and costs MUCH less then dynamat. i only did my trunk and the exhaust noise decreased dramatically. i have alot extra but i dont think its worth shipipng because its heavy as hell. but if you need some and you wanna pay for the shipping, send me a pm and i'll get it out for you. i'm in new york down by the city. but definately check out home depot or any other hardware store. o and if you dont like that idea, try searching up this stuff called brown bread. i heard that stuff works great. just my 2 cents
11-29-2004, 01:34 PM
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Since weight vs. effectiveness and cost were key factors for me (in that order), I used a combination of the following:
(3) Self-adhesive viscoelastic asphalt sheets from McMaster
.4 lbs/ft^2; DLF: .13; PN:9709T26
<20 ft^2 Peel 'n Seal to mass dampen panels that were very 'live'
about .4 lbs/ft^2
(4) Rolls of duct insulation by Frost King as a decoupler between the cabin floor and the vinyl-backed carpet - very light; .125" THK
<30 ft^2 of barium-loaded vinyl limpid sound barrier (for the back where the carpet is not backed and a lot of exhaust noise must be blocked - .5 lbs/ft^2; STC: 20)
This has worked great for me. My 10" sub is very effective in this environment. The key is really knowing what you want. Do you want to deaden/dampen panels or absorb sound or block sound transmission? I needed to dampen and block, so that's what I did. Cost: less than 30 lbs. Effectiveness: I'd guess more than -6 db.
BTW, Peel 'n Seal is the SAME as other mass dampers out there... and it sticks, does not stink and can be found cheap.
(3) Self-adhesive viscoelastic asphalt sheets from McMaster
.4 lbs/ft^2; DLF: .13; PN:9709T26
<20 ft^2 Peel 'n Seal to mass dampen panels that were very 'live'
about .4 lbs/ft^2
(4) Rolls of duct insulation by Frost King as a decoupler between the cabin floor and the vinyl-backed carpet - very light; .125" THK
<30 ft^2 of barium-loaded vinyl limpid sound barrier (for the back where the carpet is not backed and a lot of exhaust noise must be blocked - .5 lbs/ft^2; STC: 20)
This has worked great for me. My 10" sub is very effective in this environment. The key is really knowing what you want. Do you want to deaden/dampen panels or absorb sound or block sound transmission? I needed to dampen and block, so that's what I did. Cost: less than 30 lbs. Effectiveness: I'd guess more than -6 db.
BTW, Peel 'n Seal is the SAME as other mass dampers out there... and it sticks, does not stink and can be found cheap.
Last edited by Edrummr; 11-29-2004 at 02:06 PM.
