Add breadth to your sound with warm powerful lows. If you want to add amazing low-end punch to your sound -- then look no further: with raw 1600 Watts of bottom-end grunt -- there is no better way to spice up your house or hip hop or rap mix than adding this subwoofer with an amazing price-to-performance ratio. The B1800X PROs long-excursion 18 inch bass driver produces extremely high sound pressure levels (100 dB half space 1 W @ 1 m) in the frequency range of 40 - 300 Hz. This allows the B1800X PRO to achieve a tight and accurate bass response at even the highest output playing. A built-in switchable crossover allows for optional passive or bi-amping operation. This rugged subwoofer is designed to keep up with you no matter how demanding the gigs you play are.