The JL Audio 10TW3-D4 10" 400W Car Subwoofer is a high-quality, dual voice coil car subwoofer designed by JL Audio. With a power output of 400W RMS, this subwoofer is capable of delivering powerful and clear sound for your car audio system. The 10-inch size makes it a great addition to any car audio setup, providing deep and rich bass for an enhanced listening experience. The dual voice coil design allows for improved performance and efficiency, making it a reliable choice for car audio enthusiasts looking to upgrade their sound system.