Removing Sub woofer from Access Cab

I have a 2011 Tacoma Access Cab that came with the large subwoofer, that I don't want. How do I remove it? I couldn't find a way to remove the large black covering box, and didn't want to force it, and it appears that it would be epic trying to get to it from behind the seat... I would like to remove it, and then sell the dang thing! Thanks

 

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It is held on by 4 or 6 burly clips. It is a PITA to get off, it took me more than an hour since I also didn't want to scratch or crack the back wall and you will end up with holes left in your back wall. So unless you are planning on building a box or beauty panel to replace it I would just leave it. I also doubt you are going to get any money selling it. Just my .02 cents

 

If you do decide to remove it, I would be interested in buying it. Dibs. Lets me know.