Unique to this series, the Blue Wave speakers also feature a bright blue LED light which turns on when the speakers are operating. This is a coaxial speaker system with 1" high temperature aluminum voice coil driven by a 20 oz magnet structure, and has a 0.5" neodymium dome tweeter. This is a standard sized 4" speaker designed to fit in OEM locations, and is sold as a pair. The PLBW42 has 80 watts RMS and 160 watts maximum power handling, with a frequency response of 90Hz-20kHz. Includes custom grills, wires and installation hardware.