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xtremekustomz · 03-26-08, 01:31

Acoustic deadening such as fleece and other materials has been done alot with home audio, in sound rooms, and in movie theatres for a LONG time. The problem is that you have to have a certain thickness to absorb certain frequencies. When you add a deadener to to metal it adds mass to it. If I'm not mistaken some high end car manufacturers even use sand to fill in the floorboards to reduce outside noise. Butyl based and asphault based deadenerss are used alot in car audio and it isn't uncommon for some vehicles to have 8+ layers of this stuff inside. I have 4 layers in certain places in my truck along with a material called ensolite which is a foam that works as a sound barrier as well. I even know of guys that have lead sheets sewn into their floor matts to reduce vibration. It really does make a huge difference inside the cabin. As mentioned though....tires to make a big difference as well. Don't expect a truck that has 35" super swampers on it to greatly benefit from this.

Here is some neat info if you wanna do some reading:

Sound Deadener Showdown

My Truck:

03-26-08, 01:31	#37 (permalink)
xtremekustomz Registered User xtremekustomz is offline Join Date: Apr 2007 Posts: 257	Re: Sound proofing to reduce road noise Acoustic deadening such as fleece and other materials has been done alot with home audio, in sound rooms, and in movie theatres for a LONG time. The problem is that you have to have a certain thickness to absorb certain frequencies. When you add a deadener to to metal it adds mass to it. If I'm not mistaken some high end car manufacturers even use sand to fill in the floorboards to reduce outside noise. Butyl based and asphault based deadenerss are used alot in car audio and it isn't uncommon for some vehicles to have 8+ layers of this stuff inside. I have 4 layers in certain places in my truck along with a material called ensolite which is a foam that works as a sound barrier as well. I even know of guys that have lead sheets sewn into their floor matts to reduce vibration. It really does make a huge difference inside the cabin. As mentioned though....tires to make a big difference as well. Don't expect a truck that has 35" super swampers on it to greatly benefit from this. Here is some neat info if you wanna do some reading: Sound Deadener Showdown My Truck: