Summary: Excellent speakers, surprising low frequency response! Clear articulate sound at 110db. There are many 12 in pa speakers that these would beat in range and volume. For an acoustic pa set up, these work very well. Small bars, coffee houses and back yard shows the qsc AD-s52 will do justice to high end guitars and expensive vocal mics. And at 15 lbs they won't kill you arms and hands setting them up right before a show!