I wanted to make a portable outdoor sound system that actually sounded good, and could be heard.I didn’t think this was much of a hack, I am just connecting off the shelf stuff, but a friend said I should send it to hack-a-day. I go camping(if you can call it that) every year at the Texas Renaissance Festival, which is really more of a huge outdoor party. I usually rent a trailer and invite a bunch of friends. In the past I would bring a stereo or speaker dock, one year I bought an old car cd/mp3 player deck wired up to some random speakers from a home sound system, but that one didn't hold up to well to the random showers, hot(day), cold(night), dusty, damp conditions(and drunk people). The portable stereos I have brought are never loud enough to overcome the sound of the generators, and everyone else. Last year we were watching a movie on a projector and could barely hear the movie just a few feet away from the speakers. So this year I decided to go big, or go home. I had been thinking about this build for a while, but finally starting putting it all together when I found a small amplifier on sale at woot for $60.
I had originally planned on using a bluetooth receiver(that I also bought on woot) but this amp comes with one included. So next I started playing with it, wiring it up to old speakers I had laying around and a SLA battery from an old UPS. I also had an old 6 pack cooler that was missing a lid, so I used that to carry it around, and eventually decided it might make a good enclosure.
Next I bought a pair of cheap marine grade speakers, they were $45, And some cheap boxes to put them in, for another $25.
So now I have all the basic parts, and wire everything up. Everything sounds good, even though I just have wires twisted together at this point.
I start planning out everything in my head, and found a waterproof power switch I had laying around, I bought a small voltage meter, a surface mount SAE connector, some other parts to put it together, and cut a piece of clear plastic to be the lid.