ok, this saturday i have an outdoor gig at a cancer benefit festival. there is mainly a walk a thon going on around a track with booths and food vendors and a bunch of things, i still dont know the actaul size of the place. the stage is supposidly a trailer set up as a stage and no pa support is provided (there will be a few bands that bring theirs but nothing is planned, we are bringing our own) im not sure what power ours i, but te speakers are crate 12s or 15s with a 8? midrange and horn?. im not sure bt its not very powerful, made just for vocals. most likely we will be self projected (i dont know the correct term) my question: will an ampeg 8x10 be sufficient to project outdoors? its sealed so i dont know if it will "move air" should i maybe rent a second cab for some louder bass? any suggestions?