8" bass-reflex powered subwoofer delivers low frequencies down to 22Hz.- 8" bass-reflex powered subwoofer delivers low frequencies down to 22Hz- 22Hz - 150Hz frequency response- High-power 150W amplifier exclusively designed for low frequencies- LOW CUT switch, LOW CUT control (80-120Hz) HIGH CUT control (80-120 Hz)- PHASE switch allow users to set up a subwoofer system with simple connections and no additional equipment- XLR and TRS phone for outputs and XLR for L and R and EXT SUB