Sound Deadening Material

[darcmater]

So I have been thinking I want to add some to my car recently but don't know much about the differant products/brands nor installation. From what I can tell the main reason to do this is to reduce road noise and to increase audio quality. My question is if I just want to help the audio portion by doing this is just the door panels where the speakers are at and the cargo area where the subs are enough to make a differance? Like if it where a car with the system in the trunk I assume that doing the whole trunk and the door panels would be good, unless you are going for a total set up like sublime is. Since the wibe doesn't have a seperate compartment for the subs to be in would the whole interior need to be done to really help out? I really don't want to rip all my interior out, especially sicne I don't have a garage or a 2nd car to drive while I am doing this. Is doing the door panels and the rear hatch where the subs are firing at make a increased differance?Also is more than 1 layer needed usually? I have seen the normal black insulation on the foil backer but also the sheets of foam type as well. Was wondering about the uses/differnaces of thsoe as well. Guess I am just looking for a lesson on the stuff : )

[Sublimewind]

Well, I think I have shared this with you before, but to give it to everyone, have a look at this... http://www.sounddeadenershowdown.com/You will see big differences when placing it near the speakers in the doors, it gives the speaker something to work against, rather than just flexing the metal... as far as the rest of the car, some in the hatch would help some for sure, your subs fire right into it... Like I said that day we did the fogs, my coffee can analogy.. "Take a large empty coffee can and tap on the side of it with a pencil, then fill it with water and do the same" By adding the deadener you lower the resonant frequency of whatever panel you apply it to through "mass loading" the panel will still viberate/resonate but at a much lower frequency.. lower frequencies are NOt directional and much harder to localize than higher frequencies... 1 layer is usually good for 80% of people doing it, it will change things a lot, but, as you could see with my car (which STILL isn't quite done being deadened) is a real PITA to do... The more you lay down the better the effect... Dynamat used to say one layer was good for -3db of road noise cancelation, 2 layers was good for -6db and so on... which is GOODI'm still working on the guy from my audio forum about the cheap(but really nice) sound deadener he's wanting to offer, want me to check into it for you? I'm still trying to get out of him how much is on a roll (he's really busy) but he told me something like 40$ for a roll, but again, I need to find out how much is on a roll and make a compairison of price/sqft with other products, right now, the best bang for the buck is RAAMat from RAAMaudio.. I've got it BAD lately, i've started "Great Stuffing" the car now... Lol...

[darcmater]

have a ruff idea of how much I will need to do the 4 doors, the area behind the door speakers, and the rear hatch door?

[Sublimewind]

Quote, originally posted by darcmater »have a ruff idea of how much I will need to do the 4 doors, the area behind the door speakers, and the rear hatch door?Your best bet would be to shoot Rick@RAAMaudio a note, telling him what you are after and see what he would recomend, he's a GREAT guy to deal with and vERY knowledgeable about what it take for a lot of different cars/trucks.. all around great guy to deal with and doesn't try to "over sell" you product... a blessing to the audio community really..