Behringer VQ1800D, 500W 18 PA Subwoofer

Professional Active 500-Watt 18" PA Subwoofer with Built-In Stereo Crossover Professional 500-Watt powered subwoofer for PA applications Powerful 18'' long-excursion transducer with high temperature voice coil provides incredibly accurate and pulse-pounding bass Precise reproduction of ultra-low frequencies for "bulletproof" punch and impact State-of-the-art 500-Watt Class-D amplifier with comprehensive over-excursion, thermal and clip limit protection Built-in active stereo crossover provides high-pass filtered outputs for full-range loudspeakers Tunable and switchable Bass Boost plus Phase switch for ultimate low-frequency performance Variable High Cut control for perfect sound alignment Subwoofer Level control to adjust the balance between subwoofer and the full-range speakers Power, Signal and Clip LEDs for perfect monitoring Intelligent limiter for maximum sound performance and woofer protection Internal switch-mode power supply for noise-free audio, superior transien