How do you go about stopping all that rattling in the trunk when you turn your subs up loud? And why don't most installation shops take care of that? There are a few easy fixes to get 80% of the unwanted noise removed.
The first thing to look at is your tag. Unscrew the tag and glue or secure a piece of cloth or rubber to the back of the tag. In some cases if you have 4 screws holding it in place, you wont have to glue it down. This material on the back of the tag will keep the metal surfaces from vibrating against one another. In a lot of cases, this first step will give you a big reduction in unwanted noise.
Secondly, open the trunk. Underneath the back deck, you will notice two cross bars that control the trunk latch. Take some fleece or cloth material and wrap them good, then zip tie the material in place. To make it look good, use the same color material as the surroundings, like a black or dark grey. Make sure that after wrapping them in material, they can still move freely enough to function properly. These two rods will vibrate against each other if left unwrapped.
With the two main causes of unwanted noise fixed, you may notice that the rattle is completely gone. If that's the case, consider yourself lucky and enjoy it. If you still hear a little rattle you would like to quiet, turn the subs on to a bearable level and open the trunk. Listen for any vibrating parts in there and identify them. If possible, wrap or secure them in place with material and zip ties. If you find that its something like a side quarter panel, you can solve that by placing a large piece of foam between the panel and the frame. These foam pieces can be purchased at any hobby store. trim it to size and push it in place.
Some spoilers will rattle too. See if you can tighten it down. If that doesn't help, remove it and place a rubber or fleece material "washer" between the spoiler and the trunk deck. This should help considerably.
Lastly, if you have a third brake light, these can rattle a lot too. You can do a few easy fixes here. 1) place a small shim between it and the window. Be sure to use something that will absorb vibrations, but wont be noticeable form the outside. You can also try and tighten it down from underneath the rear deck from the trunk.
If you can get all these parts fastened and buffered, you will notice a big difference in the sound quality of your system.
Majestic Modifications is the complete auto accessories solution, specializing in car accessories, cold air intakes and performance upgrades, body kits and exterior accessories, glow gauges and interior accessories, wheels and tires, mobile video, car audio and electronics.
Source: www.articledashboard.com
