Martin Style Professional Speaker F Series Description F-152Impedance(Ohms):4RMS(Watts):800Programme (Watts)1500SPL1W/1M(dB):101MAX @ 1M (dB):128Frequency reponse(-3dB):42Hz - 18kHzCrossover:1.5KDispersion:80° H x 50° VFlying Device:M8 x 12pcsFinish:Textured black paintEnclosure:18mm PlywoodHigh Frequency driver:3" diaphragmLow Frequency driver:2 x15"Net weight(kgs):55Shipping weight(kgs):61.5Product dimension(mm):560W x 500D x 1050HShipping dimension(mm):590W x 660D x 1152H Martin Style Professional Speaker F Series F series Martin providing high performance and high power, include full-range systems, subbasses and low frequency cabinets pls refer to the attached specifications. Suitable for night club, Theater, Stadiums, Auditoriums Shows, Concert, Houses of worship, bar..etc.No matter what your challenge, F Series offers the right solution.