sound dampening in the cobalt SS/SC?
10-22-2008, 12:58 PM
#1
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sound dampening in the cobalt SS/SC?
OK, i am getting alot of rattles so I am thinking or R-blox'ing my trunk. I decided to go w/ R-blox because I can get 25sqft for 30 bucks, where, i would pay almost 100 bucks for dynamat. My understanding is they are very comparable.
Anyway, my questions are as follows: (hopefully someone will be kind enough to answer)
1.) how heavy is this stuff really? Like am i going to add an easy 50 lbs buy doing this?
2.) does it make sense to put this on the back of my sub box?
3.) I dont want a shiney silver trunk, is it possilbe for me to install this stuff, and put the stock carpets on top (question for someone who has already done this)
4.) will it make my bass sound clearer? I like my base now, but it seems like I get a bad rattle with it, and its very annoying.
Any other suggestions?
Anyway, my questions are as follows: (hopefully someone will be kind enough to answer)
1.) how heavy is this stuff really? Like am i going to add an easy 50 lbs buy doing this?
2.) does it make sense to put this on the back of my sub box?
3.) I dont want a shiney silver trunk, is it possilbe for me to install this stuff, and put the stock carpets on top (question for someone who has already done this)
4.) will it make my bass sound clearer? I like my base now, but it seems like I get a bad rattle with it, and its very annoying.
Any other suggestions?
10-22-2008, 02:03 PM
#2
The bass is going to sound cleaner inside the car, you will loose some of the outside bass.
Yes you can put the carpets back on
Yes it is going to add the wieght to your car
I'm unsure about putting it on the sub box, you can throw a little stuffing in the box for the same effect though
Yes you can put the carpets back on
Yes it is going to add the wieght to your car
I'm unsure about putting it on the sub box, you can throw a little stuffing in the box for the same effect though
10-22-2008, 09:54 PM
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The bass is going to sound cleaner inside the car, you will loose some of the outside bass.
Yes you can put the carpets back on
Yes it is going to add the wieght to your car
I'm unsure about putting it on the sub box, you can throw a little stuffing in the box for the same effect though
Yes you can put the carpets back on
Yes it is going to add the wieght to your car
I'm unsure about putting it on the sub box, you can throw a little stuffing in the box for the same effect though
just an example
10-22-2008, 10:30 PM
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here: https://www.cobaltss.net/forums/show...ghlight=rayths
specifically
http://s246.photobucket.com/albums/g...t=100_0145.flv
10-22-2008, 10:47 PM
#7
Ahh Jame's install....wonder what ever happen to that guy he pulled a Kaiser Sozey
That was one example of how to properlly sound deaden a car with one exception. If you flip through the picture you'll see the ones of his floor in the passenger area and see that the wires for the seats are under the sound dampening material, In my experiance this is a no no, it alows moisture to build up under the material and slowly seperate the material from the steel on the car.
If you really want to kill the road noise then do your doors, just make sure not to cover the holes at the bottom of the door, there for water to escape , unless your going for that whole door slash fishtank look
That was one example of how to properlly sound deaden a car with one exception. If you flip through the picture you'll see the ones of his floor in the passenger area and see that the wires for the seats are under the sound dampening material, In my experiance this is a no no, it alows moisture to build up under the material and slowly seperate the material from the steel on the car.
If you really want to kill the road noise then do your doors, just make sure not to cover the holes at the bottom of the door, there for water to escape , unless your going for that whole door slash fishtank look
10-23-2008, 02:34 AM
#9
Polyfill is really not necessary. It helps is few situations but if you have a good box its normally not needed.
Like spun said you install it on the metal so the stock carpet covers it up. For any visible areas you can either paint it or hushmat offers a black foil version of their vibration mat.
Also like spun said you don't want to cover the wires for 2 reasons. A the way the mat works (without the technical momobo jumbo) it needs to be applied on the surface that are rattling.... the metal not the wires B any and all of this stuff is really nasty. Asphalt based products which you should stay away from literally melt in the heat but butyl based products will aslo get everywhere. Once you apply that over your wires have fun trying to get to them again. Not only will you have to cut the foil layer to get to them but pry that **** up just to get your newly cut and shorted wires
Like spun said you install it on the metal so the stock carpet covers it up. For any visible areas you can either paint it or hushmat offers a black foil version of their vibration mat.
Also like spun said you don't want to cover the wires for 2 reasons. A the way the mat works (without the technical momobo jumbo) it needs to be applied on the surface that are rattling.... the metal not the wires B any and all of this stuff is really nasty. Asphalt based products which you should stay away from literally melt in the heat but butyl based products will aslo get everywhere. Once you apply that over your wires have fun trying to get to them again. Not only will you have to cut the foil layer to get to them but pry that **** up just to get your newly cut and shorted wires
10-23-2008, 09:58 AM
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Ahh Jame's install....wonder what ever happen to that guy he pulled a Kaiser Sozey
That was one example of how to properlly sound deaden a car with one exception. If you flip through the picture you'll see the ones of his floor in the passenger area and see that the wires for the seats are under the sound dampening material, In my experiance this is a no no, it alows moisture to build up under the material and slowly seperate the material from the steel on the car.
If you really want to kill the road noise then do your doors, just make sure not to cover the holes at the bottom of the door, there for water to escape , unless your going for that whole door slash fishtank look
That was one example of how to properlly sound deaden a car with one exception. If you flip through the picture you'll see the ones of his floor in the passenger area and see that the wires for the seats are under the sound dampening material, In my experiance this is a no no, it alows moisture to build up under the material and slowly seperate the material from the steel on the car.
If you really want to kill the road noise then do your doors, just make sure not to cover the holes at the bottom of the door, there for water to escape , unless your going for that whole door slash fishtank look
Polyfill is really not necessary. It helps is few situations but if you have a good box its normally not needed.
Like spun said you install it on the metal so the stock carpet covers it up. For any visible areas you can either paint it or hushmat offers a black foil version of their vibration mat.
Also like spun said you don't want to cover the wires for 2 reasons. A the way the mat works (without the technical momobo jumbo) it needs to be applied on the surface that are rattling.... the metal not the wires B any and all of this stuff is really nasty. Asphalt based products which you should stay away from literally melt in the heat but butyl based products will aslo get everywhere. Once you apply that over your wires have fun trying to get to them again. Not only will you have to cut the foil layer to get to them but pry that **** up just to get your newly cut and shorted wires
Like spun said you install it on the metal so the stock carpet covers it up. For any visible areas you can either paint it or hushmat offers a black foil version of their vibration mat.
Also like spun said you don't want to cover the wires for 2 reasons. A the way the mat works (without the technical momobo jumbo) it needs to be applied on the surface that are rattling.... the metal not the wires B any and all of this stuff is really nasty. Asphalt based products which you should stay away from literally melt in the heat but butyl based products will aslo get everywhere. Once you apply that over your wires have fun trying to get to them again. Not only will you have to cut the foil layer to get to them but pry that **** up just to get your newly cut and shorted wires
10-23-2008, 10:09 AM
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OK, well I bought 10 Cuft of it, hopefully that will be enough to do most of my trunk and help with sound. Its gonna be a pain lol. Does it make alot of sense to do the spare wheel housing? I was really just going to do the trunk for the most part.
10-23-2008, 09:25 PM
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10-23-2008, 09:49 PM
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yeah man, I got a hahn 3" and it's loud as hell. I can't deal with having my girl in the car with the windows up and not being able to hear her or my system at all...
10-23-2008, 09:55 PM
#18
do the floor first thing. i did just the rear deck (super wow thou) and the floor- the wheel well and i couldn't hear any exhasut noise(from the back). With that in mind i would go for 80% coverage on the trunk floor including the well and possibly 40% or so on the TOP of the rear deck
10-23-2008, 10:47 PM
#20
i would go with second skin damplifier personally.
If your mainly looking to quiet exhaust id say floor only 10-15sq ft
for system improvement and overall quieter car id say double that and do the trunk lid/rear wall (as much as you can) and the top of the rear deck
If your mainly looking to quiet exhaust id say floor only 10-15sq ft
for system improvement and overall quieter car id say double that and do the trunk lid/rear wall (as much as you can) and the top of the rear deck
10-23-2008, 10:56 PM
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awesome, thanks man. The sound of the stock system was great in the car, and I have an avic-d3 deck in there now. The sound is awesome, and eventually I will go and replace the door and decklid speakers, but the exhaust sound is entirely too much to deal with. Any recommendations for the speakers?
10-24-2008, 09:54 PM
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what is the most common cause of rattle in our car? I dont see how the spare wheel well would really rattle, and I understand it may muffle exhust, but thats not what I am worried about, im worred about the rattle?
10-24-2008, 11:53 PM
#25
The only way to really get rid of the spare tire well rattle(IMO) is to A) ditch the spare tire alltogether and then B) get rid of that bolt thats holing the spare tire in. Its not really bolted to the car its only held in by a metal clip that sits under that little arc in the tire well. Just cut the metal clip out. Same goes for the bolts that hold the stock sub in.
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