Had something weird happen
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Had something weird happen
So yesterday I decided to do the frost king sound deadner stuff on my doors. I put it on the inside of the outer door skin and it made the door rattle like crazy. Did I do something wrong? I thought this stuff was supposed to keep things from rattling.
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Joined: Jul 2010
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From: Northeast, OK
Yes, you did something wrong. However, what that was is hard to say. My guess is that you moved one of the linkage rods and it is rattling. Try pulling the linkage just slightly while driving to see if it changes. IOW pull up on the lock or push down on it. Pull up gently on the door handle.
And, depending on where you put it, Frost King is not going to help on the doors as much as something like Peal&Seal.
And, depending on where you put it, Frost King is not going to help on the doors as much as something like Peal&Seal.
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Well I wasn't driving. It was just sitting in the driveway all I had on is the radio the engine wasn't even running. I touched, pulled, held every linkage in the door which helped some. But on the other door that didn't have any frost king it didn't rattle at all. Is it possible that the frost king was reflecting the sound waves from the speaker it something?
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From: Northeast, OK
It is very remotely possible the FK was reflecting sound, but it was sound that was there already. There is something loose in the door that is moving with the speaker. Or it is an interference between something like the trim panel and the door itself.
So, let's start over. You didn't supply the info about not driving up front. Nor did you say where you put the FK. Please explain what you did, where you put it, what all you had loose, and what you were doing when testing. That will short-cut the 20 questions approach we are now into. For instance, did you hold the door glass? Was it up or down? Tell us all of those things so we don't have to guess or ask questions.
So, let's start over. You didn't supply the info about not driving up front. Nor did you say where you put the FK. Please explain what you did, where you put it, what all you had loose, and what you were doing when testing. That will short-cut the 20 questions approach we are now into. For instance, did you hold the door glass? Was it up or down? Tell us all of those things so we don't have to guess or ask questions.
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The fk was put inside of the door on the outer side. The windows were up and the door panels were off. Nothing was loose or any more loose than its ever been. The door without any fk on it didn't rattle so I decided to take the fk back off the door I had put it on and the rattling decreased by about 90%. So the only thing that changed between rattle and no rattle was taking off the frost king.
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Joined: Jul 2010
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From: Northeast, OK
Since Frost King can't rattle, if the only thing that changed was that it was quieter so you could hear the rattle. You said that "the rattling decreased by about 90%", which means it was still rattling after removing the FK. You need to find what is rattling and fix it.
Have you checked the speaker itself?
Have you checked the speaker itself?
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Laughing Gas
Joined: Feb 2011
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Crank up the BASS, turn down the treble. Take a couple minute song and blast it. Lightly start to touch everything in the door. You will make the rattle change frequency when you touch the right part. I am guessing the FK moved reverbs from one spot and concentrated them in another spot revealing a previously unheard rattle. Its probably as easy as wrapping a linkage with a little duct tape or tightening down your speaker bolts. Could be a loose window regulator bolt, or your window guide felts could be broken and causing the window to rattle against the guide. Roll the window up and down during your sound test to see if the rattle changes. If it doesn't then it almost has to be the linkages or the speaker.
Check for debris in the bottom of the door as well.
Check for debris in the bottom of the door as well.
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FTE Legend
Joined: Jul 2010
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From: Northeast, OK
Crank up the BASS, turn down the treble. Take a couple minute song and blast it. Lightly start to touch everything in the door. You will make the rattle change frequency when you touch the right part. I am guessing the FK moved reverbs from one spot and concentrated them in another spot revealing a previously unheard rattle. Its probably as easy as wrapping a linkage with a little duct tape or tightening down your speaker bolts. Could be a loose window regulator bolt, or your window guide felts could be broken and causing the window to rattle against the guide. Roll the window up and down during your sound test to see if the rattle changes. If it doesn't then it almost has to be the linkages or the speaker.
Check for debris in the bottom of the door as well.
Check for debris in the bottom of the door as well.
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Joined: May 2006
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Crank up the BASS, turn down the treble. Take a couple minute song and blast it. Lightly start to touch everything in the door. You will make the rattle change frequency when you touch the right part. I am guessing the FK moved reverbs from one spot and concentrated them in another spot revealing a previously unheard rattle. Its probably as easy as wrapping a linkage with a little duct tape or tightening down your speaker bolts. Could be a loose window regulator bolt, or your window guide felts could be broken and causing the window to rattle against the guide. Roll the window up and down during your sound test to see if the rattle changes. If it doesn't then it almost has to be the linkages or the speaker.
Check for debris in the bottom of the door as well.
Check for debris in the bottom of the door as well.
FTE Legend
Joined: Jul 2010
Posts: 32,875
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From: Northeast, OK
And, for next time, some reading:
Mat and Foam Products - RAAMaudio Inc.
Welcome to Sound Deadener Showdown | Sound Deadener Showdown
If you read those sites you'll find that there are 4 ways to lower the noise:
Mat and Foam Products - RAAMaudio Inc.
Welcome to Sound Deadener Showdown | Sound Deadener Showdown
If you read those sites you'll find that there are 4 ways to lower the noise:
- Reduce Infiltration: IOW, plug holes where sound waves get in
- Dampen: Put mass on the panel to lower the amplitude of the vibrations
- Decouple: Use a soft material between the panel that has the sound and an inner panel so it doesn't radiate the sound. That's what the felt/board combo on the firewall does - the felt decouples and the board serves as the inner panel.
- Absorb: Soft materials, like carpet and upholstery, absorb sound
What you were trying to do with the Frost King was to dampen the outer door panel by adding mass in a constrained-layer, thereby converting the sound energy to heat. However, FK isn't very good for that. If you want to use common materials then Peal & Seal would be the better choice.
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