PDA

View Full Version : Door Deadening and Me



knownuser04
09-23-2005, 07:56 PM
I just thought I would share a fairly easy and inexpensive way to deaden your door panels. The idea behind this is to create a small enclosure behind your speakers using expandable polyurethane foam (Great Stuff Big Gaps in this case.) I spent a total of about 20 dollars on both doors, including baffles.

Step 1: Remove the door panel, and everything that you don't want ruined, as polyurethane gets on anything and will never come off. http://www2.propichosting.com/Images/450002603/2.jpg

Step 2: Run the speaker wires through the hole in the front panel. Always run more than you need (assuming you are running new wires.) If you are running existing wires, just get them out of the way. http://www2.propichosting.com/Images/450002603/3.jpg

Step 3: Start filling between the inner and outer door panels with the foam, taking into consideration the expansive properties of this stuff. The stuff I used will expand about 3 times its original size, so DO NOT spray to close to where the speaker basket will be. http://www2.propichosting.com/Images/450002603/4.jpg

Step 4: In order to get the foam above the speaker, you will probably have to make some sort of brace. I used a piece of cardboard. Cut the brace as wide as the space between the two door panels, and roll it to fit in the speaker hole. http://www2.propichosting.com/Images/450002603/5.jpg

Step 5: It may take some creative thinking to get the foam can to spray where you want, but try your hardest to get the foam to cover the outside of your cardboard brace (or whatever you made it out of.) http://www2.propichosting.com/Images/450002603/9.jpg

Here is a picture showing the inside of my door, you want to make the speaker hole air tight. Keep in mind that this picture was taken less than 5 minutes after I sprayed, so it should seal up air tight within an hour. http://www2.propichosting.com/Images/450002603/7.jpg

I chose to use a baffle to clean it up a bit, and give it that extra line of defense.

http://www2.propichosting.com/Images/450002603/10.jpg

Justintoxicated
09-23-2005, 08:05 PM
do your windows still rolldown?

AllStar1500bd
09-23-2005, 08:08 PM
do your windows still rolldown?Just what I was about to ask.

Also, doesn't polyeurethane smell like ****? How long does it take for the smell to go away?

knownuser04
09-23-2005, 08:22 PM
Yes the windows do roll down. In my jeep the windows are offset of the speaker, so there is not issue. It doesn't really smell bad, and it's not to strong. After it drys and the panel is back on you will never smell it. I did the drivers door about a month ago and couldn't smell anything after the panel went on.

Dozy_production
09-23-2005, 08:28 PM
hey if it worked hazaaa!

swaptrex
09-23-2005, 08:30 PM
good idea...

Eugenics
09-23-2005, 08:44 PM
props man, thanks for sharing!

how much better does it sound?

knownuser04
09-23-2005, 08:54 PM
I haven't tested it yet. Im sure I won't be able to tell a difference until I get my Boston Pro50's. My stock speakers have no surrounds. I pulled the speakers out to look at them and the surrounds just crumbled to the touch. It should help quite a bit since it is also holding the two door panels together, and that should help with vibrations along with sealing off the back of the speaker. Some times having no money can force you to think of creative methods of completing average tasks. Hope this helps some of you out. Later.

Justintoxicated
09-23-2005, 09:36 PM
thats cool, most of us don't have that option (windows won't roll down) but its very good that you took advantage of it.

Did you deaden the rest of the door also?

some MDF adapters look REALLY reasy for your car (unlike my truck do to have 6x9 in some VERY strange shape witht for the stock adapters)! Seal the adapters to the door with some thick weather stripping foam and allenhead bolts with nylock nuts!

MY DLS Iridiums pound the crap out of my doors, and I used 2-3 layers of RAAMAT 60 mil deadening on the inner and outer portions and even 2 layers on the plastic door panel itself followed by covering with ensulite foam and I still get the rattles on certain songs that have lots of long midbass tones. But all my mirrors vibrate from them as well...

Montypup
09-23-2005, 09:51 PM
speaking of mirrors, anyone know a way to keep them from vibrating as bad?

AVSTANG02
09-23-2005, 10:52 PM
Why the **** would you do that?

Now this guy is going to start another thread...

"Why does my midbass sound like shiet?"

knownuser04
09-23-2005, 11:38 PM
I did it to seperate the air behind the speaker from the air in front of the speaker, and I have limited access to traditional methods due to my budget. If my midbass sounds like "shiet" after I install my speakers, I will be sure to ask you for your opinion as you have already shown that you can post relevant, intelligent responses. I hope you live in Texas.

Eugenics
09-23-2005, 11:40 PM
I did it to seperate the air behind the speaker from the air in front of the speaker, and I have limited access to traditional methods due to my budget. If my midbass sounds like "shiet" after I install my speakers, I will be sure to ask you for your opinion as you have already shown that you can post relevant, intelligent responses. I hope you live in Texas.


hahaha

JimJ
09-23-2005, 11:42 PM
There's still no substitute for mass-loading the whole **** thing.

If the driver is optimized for an IB setup, I could see how that would be detrimental...

Cris
09-24-2005, 05:49 PM
I for one, hope this works out well for you. I don't honestly think it will; you might be suffocating your speaker. Maybe if you.. hmm.. drilled a small hole or two through the foam, the speaker could move better, and you'd have a makeshift vented enclosure closer to the infinite baffle that the speaker was designed to operate in. Otherwise, it'll sound like it's in a tiny enclosure.. might not be good. May make the sound come out rather shallow.

audiolife
09-24-2005, 06:21 PM
ummm that cardboard is going to get wet and will eventually smell raunchy and rot are you gonna treat it at all?