The rock band I play with uses 2 L1 systems. You all do know that Bose doesn't actually market the L1 as a PA system even though it works fine in that role? We are running the L1s out in front of the band with a 15" JBL sub woofer because we are running an electronic drum kit through the system at a volume level you'd expect from a rock band. We are running the drum kit in stereo into the 2 L1s.