SUB 100V is a passive subwoofer designed for 100V loudspeaker systems. It is intended for mounting on flat surfaces such as walls or ceilings. The subwoofer has built-in high-quality 100V transformer with input power selection, allowing direct connection to 100V loudspeaker lines. Wooden cabinet with 6" woofer, low-pass filter, 100V line power selector, and a low-impedance input. SUB 100V sharply increases low-frequency performance in background music systems.