The QSC KS118 is a powerful 18-inch active subwoofer designed to deliver deep, rich bass for live sound reinforcement, DJs, and installations. With 3600 watts of Class-D amplification, it produces high output levels and precise low-frequency performance, making it ideal for enhancing the impact of music and audio presentations. The KS118 features a rugged, birch plywood enclosure for durability and portability, along with ergonomic handles for easy transport. It offers selectable DSP settings, including Deep mode for extended low-frequency response, and cardioid functionality when using multiple units. With versatile connectivity options and a user-friendly interface, the QSC KS118 subwoofer is a reliable choice for professionals seeking high-quality, powerful bass reinforcement.