Blue Label series speakers rated at 180 watts carry high and low frequencies for a full range of sound. Butyl rubber surrounds extends speaker life and keeps them secure. The ASV voice coil ensures low distortion and an open sound stage. The injection cone is made of blue polyurethane and lets your sound resonate at full power. A 20 oz. magnet, neodymium film dome midrange, and 3/4" piezo tweeter allow for a 90 Hz to 20 kHz frequency response range.