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Proper Door Sound Deadening and You
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<blockquote data-quote="Buffalohed" data-source="post: 2587630" data-attributes="member: 573552"><p>I think there are some misconceptions going around here. At least I have certainly ran into some after reading tons of pages on multiple forums about "sound deadening".</p><p></p><p>The most important thing imo is that sound deadening can be split into two categories:</p><p></p><p>1) Stopping rattles/reverberations from your car stereo</p><p></p><p>2) Dampening noise coming in from the outside</p><p></p><p>The problem is that almost everyone talks exclusively about the butyl/asphalt mass products designed to stop rattling and vibration in your car. These are great for what they do, especially if you have a system that causes stuff to rattle and shake. However, I am skeptical as to how much this actually helps stop road noise from entering your car! I am sure it works to an extent but it seems like a mixture of some other techniques more commonly used to dampen sound would have a greater effect.</p><p></p><p>I don't know very much about this so I am posting this mainly as a question. Say if you did not plan on playing an extremely loud system, therefore having few instances of stereo induced rattling, but wanted a high level of dampening from outside sound, what should you do to your car?</p><p></p><p>Foam, carpet padding, fiberglass, extra layers of butyl, caulking? What should you use and where should you put it? In my car, a ton of noise comes in from the engine compartment through the firewall. Should I load up the area with flame retardant foam, or something else?</p><p></p><p>Thanks.</p></blockquote><p></p>
[QUOTE="Buffalohed, post: 2587630, member: 573552"] I think there are some misconceptions going around here. At least I have certainly ran into some after reading tons of pages on multiple forums about "sound deadening". The most important thing imo is that sound deadening can be split into two categories: 1) Stopping rattles/reverberations from your car stereo 2) Dampening noise coming in from the outside The problem is that almost everyone talks exclusively about the butyl/asphalt mass products designed to stop rattling and vibration in your car. These are great for what they do, especially if you have a system that causes stuff to rattle and shake. However, I am skeptical as to how much this actually helps stop road noise from entering your car! I am sure it works to an extent but it seems like a mixture of some other techniques more commonly used to dampen sound would have a greater effect. I don't know very much about this so I am posting this mainly as a question. Say if you did not plan on playing an extremely loud system, therefore having few instances of stereo induced rattling, but wanted a high level of dampening from outside sound, what should you do to your car? Foam, carpet padding, fiberglass, extra layers of butyl, caulking? What should you use and where should you put it? In my car, a ton of noise comes in from the engine compartment through the firewall. Should I load up the area with flame retardant foam, or something else? Thanks. [/QUOTE]
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