60 watt,16ohm horn loudspeaker driver Alum dia-casting head cover, ABS back cover 1-3/ ... founded in 1998, specialized in manufacturing many kinds of loudspeakers, horn speakers, driver units, alarming horns, reflex horns, high-power speakers ,column ... impedance16ohmFrequency range180-6000 Hzsensibility120(dB)sound pressure level122(dB) loudspeaker horn driver unit AU-60