I bought a pair of Rockustics' Econorocks a couple of years ago. Didn't look in front of an old rock wall at the edge of the woods in my backyard about 30' from my deck. While not "audiophile" quality, actually sounded pretty good too given the open air environment until "something" went through the rock grill and driver(not clear whether it was something kicked up by the lawn cutters or the foot of my son or one of his friends - he said the former though not completely convincingly). In any event they provided perfectly good sound for casual backyard/deck entertaining.
Here's a link:
http://www.rockusticsinc.com/
Bill