My Mark Levinson sound system has an issue with the rear speaker behind the rear passengers. I believe the right term is the sub? Had this issue for a while but it is getting worse. Not too sure what the exact issue is and how to fix this.

 

Maybe you can describe what the issue is.
I watched the video and can hear/see the speaker vibrate/pound, but I have no idea what's playing on the stereo (I'm assuming something is playing) so kinda hard to say what the issue is.

 

It's a rattle sound and a mix of a gurgling sound. It definitely sounds like it shouldn't be happening. I held down panels and such around the area and pretty sure it is coming from the speaker.

Do you know how to remove the upper mesh part above the speaker? I could only remove the liner in the trunk.

 

Attached is the steps to get to the speakers...not gonna lie you're going to be taking quite a few pieces out.
You'd be starting at Step 2 in the attached doc.
Basically you remove the rear seat lap cushion which just pops out.
Then remove the sill plates and work your way up removing the trim all the way to the C-pillar.

Look over the steps in the doc, if you the specific instruction for a particular step, post back with the Steps you want the detailed instructions for and I'll attach them.

 

Thanks for the PDF. Most likely will be a weekend thing haha.

By any chance you know of a way to disconnect or temporary disabling that speaker/sub?