The Meyer Sound 750-LFC Low-Frequency Control Element injects your PA system with 3,100 watts of rafter-shaking low end — all the way down to 37Hz. This active subwoofer's ultra-efficient Class D amplifier exhibits impressive output with minimal distortion, and its 15-inch, dual-coil, long-excursion cone driver yields unbelievable linearity and crystal-clear transients at any volume. The 750-LFC is the embodiment of simplicity, thanks to its self-powered design — no amp rack, long cable runs, or crossover calibration required.