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Old 21st March 2009, 05:42 PM   #1
therich is offline therich  England
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Join Date: Oct 2007
Default sound deadening my car. some advice please

i have an old ish car i am restoring and i want to reduce the cabin noise so its nicer to drive. i also want to improve the sound of a sterio should i decide to fit a nice install, which i probably will at some point. car is currenty a bare shell so now is the time to do the work.
am i right in saying you fit the sticky black/ silver stuff for the low frequency's and then a foam type stuff on top of it for the highs, to all the doors, roof, floor and boot?

so i have a layer or 2 of this
http://cgi.ebay.co.uk/Mini-Sound-Dea...QQcmdZViewItem

and then a layer of this on top of it
http://cgi.ebay.co.uk/eDead-TekLite-...QQcmdZViewItem

what are your thoughts please?
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Old 21st March 2009, 06:23 PM   #2
HK26147 is offline HK26147  United States
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Don't know about those particular products:
In the US; Dyanmat make sound deadening products.
They are not cheap; some swear by it, others say it just as effective to use stuff in a can like 3M 03584 Professional Grade Rubberized Undercoating

Dynamat has some install tips that may help
http://www.dynamat.com/technical_technical.html

Others ( Rockford/Fosgate etc ) also sell adhesive sound mats.
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Old 21st March 2009, 06:48 PM   #3
therich is offline therich  England
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cheers, looks like they just use one layer perhaps thats why it costs so much
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Old 21st March 2009, 07:07 PM   #4
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This site has some very good info on sound dampening materials. It is based in the US but some of the info/tests may be applicable for you.


http://www.sounddeadenershowdown.com/

Good Luck,

KC
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Old 22nd March 2009, 07:50 PM   #5
therich is offline therich  England
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thanks for that guys, it has helped me a lot just reading and learning from those sites. cool one
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Old 23rd March 2009, 11:24 PM   #6
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Places like rear pillars and other double cavities can be stuffed with fiberglass batting. Not only will this make the car quiet, it will keep it cooler with AC on.

You can also use expanding spray foam in places you'll NEVER need to get into again.

John C.
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Old 27th March 2009, 11:33 AM   #7
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Default sound damping

i agree with the expanding foam. i have used it on a number of different makes and models. it works great. also dynamat is one of the best sound damping products out on the market. just make sure that u apply it correctly. or in the summer months it will begin to come off of uneven mounting surfaces. also there are a few roofing products that work very well. hit me up if u want to know more. i'll have to look them up.
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The level of performance in any mobile sound system is a direct result of the way it was installed. Passion, pride, perfection.
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Old 29th March 2009, 08:58 AM   #8
omar_uh is offline omar_uh  United States
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Join Date: Mar 2009
Quote:
Originally posted by Hotsauce
Places like rear pillars and other double cavities can be stuffed with fiberglass batting. Not only will this make the car quiet, it will keep it cooler with AC on.

You can also use expanding spray foam in places you'll NEVER need to get into again.

John C.

i think best would be use expanding foam in the gaps such as behind a pillar, then add liquid sound deadening and if possible use a layer of sound deadening material over it. again just a thought.
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