Active subwoofer from the KW series. It was built to give you big-time performance, to the tune of 1,000 watts. And, thanks to the Class D design, this speaker won't break your back when it's time to set up or tear down! Rugged and made to outlast the wear of the road, the KW181 subwoofer comes equiped with low-noise casters and a threaded speaker pole. Speaker: 18 '' - Power output: 1000 W - Frequency range: 37 Hz to 129 Hz - Maximum SPL: 135 dB peak - Connectors: 2x line XLR input, 2x line XLR out - Dimensions: 510 x 595 x 761 mm - Material: 15 mm birch plywood - Weight: 37,6 kg.