The QSC KLA181 Active Flying Subwoofer is a high-performance powered subwoofer designed for live sound, mobile rigs and installed systems. It features an 18-inch low-frequency driver, a 1,000-watt Class-D amplifier module, and advanced DSP protection and tuning. Designed to be flown or ground-stacked with its built-in rigging points and pole-mount receptacle, this sub provides deep, punchy bass down to 33 Hz while remaining efficient and flexible for a variety of applications. Key Features: 1,000 W continuous Class D power module for robust low-end performance. 18-inch vented subwoofer driver with frequency range down to 33 Hz (-10 dB) for deep bass extension. Maximum sound pressure level up to 135 dB (1 m peak) for high output applications. Rigging-capable design: threaded pole mount supports two companion enclosures and M10 suspension points allow flying when rigged properly.