KB_logo_JPEG.jpg   This is not recommended. The Truth are NEAR FIELD MONITORS, which means they are meant to be listened to at a very close range in a home or studio critical listening environment. They are not meant to be used as PA speaker systems.  
For live music applications, check out powered speaker systems, power amplifiers, passive PA speaker systems, and signal processing systems from BEHRINGERKLARK-TEKNIK, and TURBOSOUND.