M-Audio SBX10 240-Watt Professional Active Subwoofer 10" fiberglass/paper composite driver - full, tight bass response for accurate monitoring all-discrete 240-watt internal amplifier - plent of power to reproduce extended low frequencies variable 50-200Hz crossover - compatabile with any direct-field monitor system subwoofer bypass footswitch - audition how your mixes will sounf with and without a subwoofer flared rear bass-reflex port - high efficiency, minimal air turbulence 10" fiberglass/paper composite driver - full, tight bass response for accurate monitoring All-discrete 240-watt internal amplifier - plent of power to reproduce extended low frequencies Variable 50-200Hz crossover - compatabile with any direct-field monitor system Subwoofer bypass footswitch - audition how your mixes will sounf with and without a subwoofer Flared rear bass-reflex port - high efficiency, minimal air turbulence All-discrete 240-watt internal amplifier - plenty of power to reproduce extended low frequencies Variable 50-200Hz crossover - compatibility with any direct-field monitor system Subwoofer bypass foot-switch - audition how your mixes will sound with and without a subwoofer