This project was inspired by a friend's build. It's made for extreme circumstances like Whitewater rafting, and after the meltdown of our electrical grid. I'm pretty sure you could throw this thing off of an extreme cliff and it would survive, more or less, intact and working. Also, it is extremely heavy. [OK maybe not Extremely, but pretty heavy] I entered this into two contests, so if you like the idea please vote for me. My friend's original build was very basic, and required a tape adapter to play from another device, like an iPod or such. I saw a couple of features that I wanted to add, for my own sense of functionality and simplicity, so I started collecting materials for my own. The project languished on my bench for at least a year before I heard that Joe was refurbishing his old box. This was the inspiration I needed for getting off my duff and finishing my own box. Now I'm ready for summer!
Here's what I wanted out of this project:
Reasonable battery capacity, ability to recharge itself, reasonable audio fidelity, rugged durability, ability to charge/ power other devices [music players, phones, raft inflaters].
As far as I know, so long as I don't let the battery go flat for too long this box should be able to provide electricity and music for years without ever plugging it into the grid.
Step 1: The Box
I chose to use a 20mm ammo can. It's roughly 17"w x 7"d x 14"h. There's plenty of room for a faceplate including all the accessories and equipment, with enough left over for a music player. I like the ammo can for it's sturdy-ness. I feel like I could toss it off a cliff and it would be no worse for wear.
Other options I considered were Pelican cases, tool boxes, and suitcases.