I've got a pair of these. JBL EON 15 powered speakers. They are great but I barely use them. If you're just doing shows at your house you probably don't even need 12s. I've got a set of Yamaha 10s with a small Fender powered mixer head that works just fine. The smaller speakers typically have just as high a power rating as the larger ones but they don't have quite as much low end response. If you aren't running bass or kick drums through the PA you wont know the difference. Actually the vocals (to me) tend to cut better with the smaller cones. The fact that they're typically cheaper and take up less space is a plus too.