The Rockville SS8P 8 inch 400W Car/Truck Subwoofer is a powerful and compact enclosed powered subwoofer designed for vehicles. With a single voice coil and 8-inch speaker size, this model offers a clearance of 4.5 inches and an RMS power output of 100W. Ideal for both cars and trucks, it provides excellent low-frequency sound performance and is perfect for enhancing your audio experience on the go. The Rockville SS8P subwoofer is a reliable and high-quality choice for audiophiles looking to upgrade their vehicle's sound system.