The Durabrand Speaker System Subwoofer Model SW-SP4 is a rectangular-shaped silver subwoofer designed for home audio systems. With an impedance of 4 ohms, this wired subwoofer from Durabrand is a reliable and tested component that enhances the sound quality of your home entertainment setup. Manufactured in China, this subwoofer model is designed to provide deep and powerful bass for a more immersive audio experience. Perfect for those looking to upgrade their home speaker system with a high-quality and efficient subwoofer.