ZETHUS-VX118S112BX2: This set includes 1 x ZETHUS-VX118S passive line array subwoofer, 2 x ZETHUS-112B passive line array speakers, and 1 x STSDA-M54B speaker pole. 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. Crafted with high-quality plywood, this subwoofer ensures long-lasting durability and reduced vibrations for cleaner, tighter bass. 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.