The Kicker 09S15C4 15-inch subwoofer has a cone composed of SoloKon polypropylene material and a circular shape specifically designed to fit in smaller sealed enclosures, making it suitable for all types of automobiles. This one-way 15-inch automotive subwoofer produces a smooth response thanks to a low frequency ranging between 18 Hz and 100 Hz. This one-way Kicker car subwoofer also includes a dual voice coil, offering more wiring flexibility as compared to a single voice coil subwoofer. Furthermore, this 15-inch automotive subwoofer offers a peak power handling of 1500 watts and an RMS power handling of 700 watts in order to deliver good-quality bass effects. This Kicker car subwoofer has a sensitivity rating of 88 dB, allowing it to make efficient use of the power injected in to this device. In addition, this Kicker car subwoofer offers an impedance rating of 4 Ohms. The Kicker 09S15C4 requires a cutout diameter of 13.88 inches to fit in a top-mount position and has a top-mount depth of 7.88 inches.