bad ghetto blaster
Thread Starter
Burning Brakes
Joined: Jan 2004
Posts: 791
Likes: 1
From: lincoln ri
bad ghetto blaster
I am still attempting to perfect my delco/bose stereo in my 88. The latest problem I have run into is this. Bad vibration in the doors from the speakers, even at low volume. I have had my hand in the door shell more than my wife lately, and still can't seem to locate the piece that is "vibrating". I have heard of some members using a sound deadener. Could anyone give me some info on this??? Where it is available, etc. 
Le Mans Master
Joined: Jul 2004
Posts: 5,040
Likes: 939
From: Bonney Lake Washington
I have read that the vibration is often caused by the grills/emblems on the grills! There are a few brands (such as dynamat) which, even if they don't cure the rattle do dramatically improve the sound of the speakers (it's amazing how much is lost when the speaker drives the door/grill as well).
It is, however, fairly labor intensive to do correctly.....
It is, however, fairly labor intensive to do correctly.....
Le Mans Master
Joined: Apr 2003
Posts: 6,059
Likes: 2
From: Texas
Originally Posted by vetteboy88
and this is why having several forums is not to good. Someone may have great suggestions, but does not "graze" in the proper forum...Just my 2 cents 
this is why you name your topic correctly stating your problem...and not with a name that most people will just skip over...not everyone has time to read ALL postsyou have to figure out what is vibrating inside your door before you can dampen it...just applying sound deadening to the door will not cure it if something is vibrating internally
Melting Slicks
Joined: Sep 2003
Posts: 3,306
Likes: 2
From: Wesley Chapel Fl
deiaggie is correct. The best thing to do is make the speakers vibrate and then start investigating. You can pretty much just start putting your hands on everything till you stop the vibration. Once you find it you can determine an approiate repair. Honestly there are way too many parts inside your door for anyone on a forum to tell you exactly what it is. You can get some hints on what to look for...in the end it will be you finding it.
On another note. Speakers are alot like tires. If your tires are spinning you are wasting energy. If what you have the speaker mounted to is flexing you are wasting energy. All the energy should be directed forward.
On another note. Speakers are alot like tires. If your tires are spinning you are wasting energy. If what you have the speaker mounted to is flexing you are wasting energy. All the energy should be directed forward.
Thread Starter
Burning Brakes
Joined: Jan 2004
Posts: 791
Likes: 1
From: lincoln ri
thanks for the tips. I purchased some of the dynamat squares, but the tech told me the same thing. Don't expect these to work well, because fiberglass doesn't rattle. I took the door panel off, and it still had the noise, so I was able to eliminate that. I stuck my hand inside the door, and have touched as much as I can, but can't locate the rattle. The speaker I removed from the box, and naturally the rattle stopped, so the speaker is fine. It seems that would leave the speaker box, but I have pushed and pulled on that and the rattle is still there. Like you guys say, I guess it's a process of elimination and a true PITA to locate. Thanks again!! 
