ZETHUS-VX118S112BX3: This set includes 1 x ZETHUS-VX118S passive line array subwoofer, 3 x ZETHUS-112B passive line array speakers, and 1 x ZETHUS-112FF flying frame. ZETHUS-VX118S PASSIVE LINE ARRAY SUBWOOFER: Features a powerful 18' woofer with a 4' voice coil (145 oz. magnet),delivering 800W RMS and 1600W program power handling. Durable plywood construction ensures durability and reduces vibrations, while its versatile mounting options offer seamless integration. ZETHUS-112B PASSIVE LINE ARRAY SPEAKER: Impressive sound with 12' woofer and two 1.4' titanium compression drivers. Delivers 400W RMS and 800W program power handling (8). Flexibility of full-range or passive bi-amp mode for quick connections and setups.