This model features a 3/4" high temperature ASV voice coil, 20 oz. magnet structure and 1/2" neodymium film dome tweeter. This is the only model in the series not to feature a tweeter and mid-range speaker. This is a standard 4" size speaker designed to fit OEM locations and is sold as a pair. The overall frequency response is 110Hz - 20 kHz, with 90 W RMS and 180 W Max.