While investigating a fix for the rear power shade, I discovered the blown subwoofer.
I looked up the matching Mark Levinson 10" subwoofer and it's over $500+,
but luckily I found a matching after market subwoofer foam repair kit for less than $20 total.
https://www.youtube.com/redirect?red...53.m2749.l2649

Here is the video of my repair.

I was little bit skeptical initially mainly because I've never done such repair before,
but the foam size and shape matched perfectly, and I was able to repair it in little over an hour,
which included glue drying time on each steps, but not including the time to remove the
rear seats, rear deck, and subworofer.

If I took it to a shop, I may had to spend $1,000+ on new subwoofer and labor,
so I'm super glad to complete this with just $20. :-)

Now...only if I can figure out the power rear shade problem...