This model features a 1.25" high temperature ASV voice coil and 50 oz. magnet structure, which are both the largest in the series. Also included is a 1.5" film dome midrange, 1" film dome tweeter and a 3/4" piezo tweeter, making this the only four-way "quadriaxial" speaker system in the Blue Label series. This is a standard 6" x 9" size speaker designed to fit OEM locations, and is sold as a pair. The overall frequency response is 50Hz - 20 kHz, with 200 W RMS and 400 W Max. Includes grills, wires and mounting hardware.