Active subwoofer with 18" loudspeaker. The magnet configuration of woofer greatly reduces distortion. Winding voice coil increases the surface of voice coil and heat dissipation. High sensitivity, power and efficiency. Water proof paint and grille with waterproof structure for the applications in various weather. Fourteen M10 screws for hanging, standard pole mounting, quick set up, multi-angle hanging. Dimensions: 568 x 627 x 710 mm. Weight: 58,5 kg. Finish: Black.