Description High power subwoofer: 2 × 18’’amplified by LA12XLow frequency limit (-10 dB) 25 Hz ([KS28_100])Maximum SPL1 143 dB ([KS28_100])Directivity Standard or cardioidTransducers 2 x 18’’ neodymium, aluminium die cast basketAcoustical load Bass-reflex enclosure, L-VentsNominal impedance 4 ΩConnectors IN: 4-point speakON?Rigging and handling Flush-fitting 2-point rigging system6 ergonomic handles2 ground runners8 side runnersWeight (net) 79 kg / 174 lbsCabinet Premium grade beech and birch plywoodFront Steel grill with anti-corrosion coatingAcoustically neutral 3D fabricRigging components High grade steel with anti-corrosion coatingFinish Dark grey brown PANTONE? 426 CIP IP55