The Episode ES-SUB-ELE8-250-BLK Element Series 260W 8" Ported Subwoofer in black is a wired subwoofer with a driver size of 8 inches and an impedance of 8 Ohms. Made by Episode, this subwoofer is designed to enhance your home audio experience by delivering powerful bass tones for a more immersive sound. With a sleek black design and quality construction, this subwoofer is a great addition to any home audio setup.