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Old 05-08-2014, 11:20 PM   #1
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Sound Bar Rattling......Still

I am having troubles with the sound bar in my Jeep. I have installed new speakers (Polk DB651s) and an amp. I have already stuffed the sound bar with pollyfill. This helped originally, but I am still getting weird vibrations from the sound bar. It feels like the plastic discreetly above the speakers are still able to vibrate enough to make noise. I have checked all the screws, speakers and sound bar alike, but nothing seems to be helping.... Any advice?

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Old 05-09-2014, 12:55 AM   #2
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Old 05-09-2014, 02:59 AM   #3
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Get a couple of square feet of a sound deadener like Dynamat. Run a couple strips of it along the inside of the soundbar. That should keep the soundbar from vibrating. Polyfill isn’t meant to keep an enclosure from vibrating. The polyfill should be loosely packed inside the enclosure; if you pack too much in there it can cause problems.
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Old 05-09-2014, 08:43 AM   #4
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Next time you hear the vibration, touch the light bulb housing in the center of the bar. This is where my vibration was coming from. I fixed it with some tight polyfill behind the light.
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Old 05-09-2014, 09:59 AM   #5
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I have the same speakers and no amp (just go off aftermarket HU) and I get an intermittent vibration. I always assumed it was because I had a loose screw (haha) since the Crutchfield adapter plate was a 'so-so' fit - and just haven't gotten around to fixing it (here is how important it has been for me - I've had this rattle off and on for a year now).
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Old 05-09-2014, 10:45 AM   #6
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Quote:
Originally Posted by Gonzos Wrangler View Post
Next time you hear the vibration, touch the light bulb housing in the center of the bar. This is where my vibration was coming from. I fixed it with some tight polyfill behind the light.

This was my problem too. I cut a piece of an old bike inner tube, took off the dome light housing, and put the piece of rubber between the housing and the metal bar behind the housing. No more rattle.

I had done the polyfill, and it helped with sound, but didn't help with the rattle.

What problems does packing the polyfill too tight cause?
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Old 05-10-2014, 04:01 PM   #7
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It you pack it too tight, the sound improvement will not be noticeable. Sound waves are supposed to "filter" thought the polyfill...read that somewhere.
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Old 05-10-2014, 10:49 PM   #8
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Yea our jeep had 2k miles on it and it sounds like the bar speakers are blown or massive vibration . Static sound.
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Old 05-10-2014, 11:40 PM   #9
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Mine was the light housing. Drives me nuts but was a bit concerned to put polyfil against something that might generate heat. Maybe I should try the bike tube
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Old 07-05-2014, 04:07 PM   #10
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Fixed mine with a couple of pieces of rubber maybe a bit thicker than 1/16"
put it on top of the foam insulation sort of like a gasket and tightened the screw...rattle gone.

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