*UPDATE* I have created another video better explaining how it was built and with all components installed (as of now) with an estimated cost at the end. Click the link on the video. Also it's not narrow like this one. I figured out how to work my phone.
I took a Pelican 1200 case and turned it to an awesome construction boom box. Not 100% complete as I'm still waiting on parts but once they're in and it's finished I'll upload the finished version of the box.
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https://www.youtube.com/watch?v=9sazNL54byM