I'm going to document a speaker enclosure that I have recently finished for my son's teardrop. His is finished. I had so much fun with it I'm making two more for my other kids and then I will rebuild my original enclosure that I want to do over because it doesn't offer the stereo separation I want. Here's Andy's version followed by my own from a year or so ago.
No protective grill. I think I will leave it as is since the grill will detract from the look. This is powered via 12v from the teardrop or a wall wart.
My first attempt with battery pack. This is powered via a battery pack mounted on the rear. It sounds good but just doesn't pack the punch I like with better stereo separation.
More to come...