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back panel in my 4gen lude

 
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Old 05-11-2009, 02:35 PM
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back panel in my 4gen lude

has anyone had a problem with your rear panel(what your rear speakers are) rattle due to subs..of course there gonna rattle but i was wondering has anyone found a way to minimize it or stop it completely??..??..
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Old 05-11-2009, 02:50 PM
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Re: back panel in my 4gen lude

A vibration dampener or similiar barrier between the two hard surfaces of the metal and the hard backing of the "carpet" will do WONDERS!
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Old 05-11-2009, 04:01 PM
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Re: back panel in my 4gen lude

Ok.... I have been asked to explain this a little better.

Bass energy induces unwanted noise in our vehicles by resonating a part of the car... Every piece of metal, plastic, etc in your car has a specific resonant frequency(s) . The most common is the trunk lid "buzz" that is soooo familiar in MANY thrown together installations. The other is when two panels, plastic and metal lets say, like what is in your rear deck, literally SLAP together as the bass energy moves the panels to the point they hit eachother.
By either insulating the two material from eachother with a softer substrate, or adding mass to said panel(s) you lower the resonant frequency, thusly preventing it from making noises. My local shop demonstrates this with two aluminum garbage cans. One has a product, like dynamat, on the inside, and one does not. You can hear a significant difference when you knock on each one. obviously. This is the same for the sheet metal and other structures in your car.

let me know if this helps or you need more information.
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Old 05-11-2009, 04:12 PM
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Re: back panel in my 4gen lude

so what do you think i should do...i though about putting an aluminum peice in the trunk under the panel...screw it in...then fill the inside with something..but not sure if that would work
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Old 05-11-2009, 04:27 PM
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Re: back panel in my 4gen lude

that isnt really where your noise is coming from.

From how you described it, the hard backing on the rear deck carpet material and the metal of the rear deck itself are slapping against eachother.

A cheap fix is to pull the rear deck carpet off, carefully, and lay down some foam rubber tape on all the high spots. Then put things back together and see if that helped lessen the noises. This would be the barrier method I spoke of above.

Mass loading it is not your primary issue at this time... or so it sounds.
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People say the biggest difference you can change to your system is to add a subwoofer. Which is true, it is the most noticable difference. But running an amplifier to a good set of speakers makes the BEST difference.

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Old 05-11-2009, 04:30 PM
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Re: back panel in my 4gen lude

yeah it is comeing from under the rear speakers i think...its in that panel so...just take the carpet off and tape it down..and it should help
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Old 05-12-2009, 12:42 AM
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Re: back panel in my 4gen lude

Quote:
Originally Posted by LilMsPrelude View Post
that isnt really where your noise is coming from.

From how you described it, the hard backing on the rear deck carpet material and the metal of the rear deck itself are slapping against eachother.

A cheap fix is to pull the rear deck carpet off, carefully, and lay down some foam rubber tape on all the high spots. Then put things back together and see if that helped lessen the noises. This would be the barrier method I spoke of above.

Mass loading it is not your primary issue at this time... or so it sounds.
I have the same problem excepppptttttt with me its not the rear panel and the metal, its the rear panel aggainst the rear windshield... Idk if i should screw it down or what. Putting sumthing inbetween might look real ****ty
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Old 05-12-2009, 10:30 AM
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Re: back panel in my 4gen lude

figured out what it is..its my brake light inside the car...the peice up there is rattleing..now is suggestions
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