A high-output, large-format subwoofer system with proven performance in complementing high efficiency, full-range loudspeakers, the legendary Eastern Acoustic Works SB1000zP is a subwoofer designed for permanent installation where the fatter-sounding output of dual 18" drivers is desired. It's driver mounting maximizes cone area and minimizes frontal area, providing acoustical performance and physical configuration well-suited for creating large subwoofer arrays. Additionally, it's made to be used with today's sophisticated digital signal processing for optimized the LF response. EAW's MX Series processors (sold separately) are recommended for the required crossover and equalization.