Powerful Low-Frequency Reinforcement: The ZETHUS-VX118SPW line array subwoofer features an 18' woofer with a built-in class-D amplifier, delivering rich and solid low-frequency reinforcement with its 800W continuous, 1600W peak (8O) power handling capability. Comes with a built-in DSP, dynamic bass enhancement, RMS dynamic processor, and 4 digital EQ presets for precise sound customization. Sturdy and Mobile-Friendly: Crafted with high-quality plywood, the ZETHUS-VX118SPW effectively dampens unwanted vibrations, providing excellent protection and durability for mobile applications. Seamless Integration: Designed to be used in a speaker array with the ZETHUS-112BPW line array speaker (sold separately), these components create a perfect PA system with exceptional sound quality and versatile configurations.