Coupe Rear Window Shelf Rattle Solution, Kayger Style doityourself

Was getting tired of the rattling, but didn't feel like tearing the rear of the car apart.

I've read up thoroughly on the bolt mod, the tennis ball mod, and the stuff it with foam mod.

I opted for the styrofoam cone mod. http://1.bp.blogspot.com/_kdtIzoFWz7...1182611227.jpg Picked three of these babies up at Michael's for a few bucks.

Dropped the sub and wedged three of these puppies in there-- one on the outboard side of each speaker hole, and the third up against the tray that sits up against the rear window.

Happy to report that the rattle is completely gone with no negative effect on sound as I didn't have to fill that acoustic cavity up with anything.

Total DIY time was about five minutes.

Cone mod by Malik FTW!

:keith

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Originally Posted by kayger12

:keith

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+1

i did the tennis ball mod the other day but my rear deck still rattles like hell. i guess at this point the only solution is the complete backseat tear-apart and foam padding installation

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Originally Posted by webster

i did the tennis ball mod the other day but my rear deck still rattles like hell. i guess at this point the only solution is the complete backseat tear-apart and foam padding installation

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Try the styrofoam-- if it doesn't work, worst you're out is 5 minutes and a few bucks.

Hermes DIY is definitely the way to do it right. I just didn't have the time right now.

True, this will work also. The main issue is in the middle of the shelf where they didn't put enough padding. The tennis ball way works but not perfectly (you have to cut them to the right size). Styrofoam is better since it has more shape/strength to it. I've also heard of people who will stuff tshirts/towels in the cavity.

How big are those cones? (No perspective in the photo)

You guys just need to turn down the subs! :ducking :shift

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Originally Posted by ELCID86

How big are those cones? (No perspective in the photo)

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They were somewhere around 6 inches.

Still working flawlessly.

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Link to these cones?

Did this today. Happy to report, works like a champ!


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The cones are 2 7/8x 5 7/8. I put them in sideways and jammed them in the spots you said. At first I tried cutting one to size and realized that was silly. Best fit was sticking em in sideways


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Any link to buy these cones online ?
Also can someone take a pic showing the cones in position, if possible ?
Thanks IA


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Problem solved. I had cracking or rattling sound coming out of my trunk when I crank up the AUX or Bass, due to the HK amp so I decided to drop the HK assembly today. It was just 4 screws and 10 minutes. I also got 4 of these cones from Michaels.

1 cone goes to left hole and pointing to the left.
1 cone goes behind the metal partition (between the 2 holes)
1 cone goes to the right hole and pointing to the right
1 cone goes to the right hole and pointing to the back where there is room

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Originally Posted by thinkpad240

Problem solved. I had cracking or rattling sound coming out of my trunk when I crank up the AUX or Bass, due to the HK amp so I decided to drop the HK assembly today. It was just 4 screws and 10 minutes. I also got 4 of these cones from Michaels.

1 cone goes to left hole and pointing to the left.
1 cone goes behind the metal partition (between the 2 holes)
1 cone goes to the right hole and pointing to the right
1 cone goes to the right hole and pointing to the back where there is room

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:thumbup Happy to report mine is still working like a charm 6 years later.

Gonna try this. Tennis ball mod worked GREAT, but definitely still rattles at certain frequencies

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Originally Posted by kayger12

[emoji106] Happy to report mine is still working like a charm 6 years later.

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Nice. Good to see you around.

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I obtained some used tennis balls from a player, but haven't looked into where to put them. Had a significant rattle when pumping tunes on the trip to The Vintage in 2017.

bought some cones from joann fabrics and honestly it was such a waste of money and time. They were brittle and had absolutely no flex to them. Tennis balls works better in my opinion as you can squeeze them into a tight space. Added one and a half more tennis balls to my deck and took away some the remaining deeper rattles.

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Originally Posted by papa_g

bought some cones from joann fabrics and honestly it was such a waste of money and time. They were brittle and had absolutely no flex to them. Tennis balls works better in my opinion as you can squeeze them into a tight space. Added one and a half more tennis balls to my deck and took away some the remaining deeper rattles.

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My foam cones have worked well for me, but I'm sure over time they'll compress and need to be replaced or use a different object like a tennis ball.

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Originally Posted by BMWCurves

My foam cones have worked well for me, but I'm sure over time they'll compress and need to be replaced or use a different object like a tennis ball.

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I used tennis balls in my 2003. In my 2006, I used the souls of my vanquished; they seemed to have worked better.

The cones just crumbled when I tried to wedge them into a tight space. No bueno. Waste of time and money for me. Maybe the styrofoam you guys used was a different kind.

Is there a definitive write-up on the tennis ball anti-rattle technique? Thanks in advance!

There are a few DIYs out there, but nothing like "This is the way you are supposed to do it to achieve optimal results". I think 4 Tennis balls is a good amount; one to each side, evenly spaced, and wedged into a tight space so they are pushing up on the deck as much as possible. There is also a 'bolt mod', but I did not really understand how it works once I actually got in the subwoofer space. They talk about it here towards the end of the thread: https://forum.e46fanatics.com/showthread.php?t=429992

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Originally Posted by papa_g

There are a few DIYs out there, but nothing like "This is the way you are supposed to do it to achieve optimal results". I think 4 Tennis balls is a good amount; one to each side, evenly spaced, and wedged into a tight space so they are pushing up on the deck as much as possible. There is also a 'bolt mod', but I did not really understand how it works once I actually got in the subwoofer space. They talk about it here towards the end of the thread: https://forum.e46fanatics.com/showthread.php?t=429992

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Thanks for the link. I've never dropped the sub box or looked too hard under the deck, but will deal with it before the spring driving season.