Depends on what you wanna spend, Mackie redid their thump series and can crank out some serious sound for the price and weight. 12 and 15 inch models

http://www.amazon.com/Mackie-THUMP15-15-Inch-Powered-Loudspeaker/dp/B00IN2WGJK/ref=sr_1_1?ie=UTF8&qid=1427553664&sr=8-1&keywords=mackie+thump+15