McKulit

First of, I'm no car audio freak so the whole stock setup is fine by me.

I have an 04 TL and lately I've had issues with the stock sub bottoming out.

I thought I'd check it out maybe the cone has a crack or I just simply need to replace it.

I took the back seat out (the most painful part of the whole inspection process).

I inspected the sub and the L R speakers and they looked "visually" fine.

I noticed that the screws on the speakers are a little loose so I proceeded in tightening them up.

Turned on the CD and fired up the volume. Hmmm it made a difference.

I've put everything back together, moldings, back cover and the seats.

That seemed to have fixed the issue. I can crank up the volume now and no bottoming out.

I hope this helps some who doesn't want to replace their OEM speakers.

fish008

So you're saying that all you needed to do was tighten the screws and that fixed everything?

McKulit

Yes. I guess due to age and lots of bass thumping the screw has gotten loose in time.

In the last few months when I play music with deep bass... it sounds like brrrrt ...brrrrt ... brrrrrt .... funny like it's farting. That's why I thought I need new subs.

If I was to guess what was happening is that the whole speaker is vibrating against the metal it was attached to.

If you want to do a little better than what I did, you can probably put a dynamat in that whole area. But like I said I'm no audio freak so by tightening the screws fixed my bottoming out issue.

I don't play music louder than volume 14 anyway. That's with the sub setting at max.

Ernie Golfs

There is a TBS out for the rear shelf speaker rattle. It is TSB 04-043, you can see it in this attachment:
/index.php?page=tsb