Package includes: 1 jbl srx918s 18 1100 watt active powered subwoofer class d sub w dsp 1 jbl srx900 rc1 rain cover for all models features: high-performance high-density system solution in a truck-pack friendly format high-power-handling transducers deliver low distortion high fidelity and class-leading output built-in passively cooled class d amplification with a universal power supply dual ethernet ports with neutrik ethercon connectors supports harman hcontrol ethernet user-controllable dsp levelmax limiting uses sophisticated excursion-control algorithms to protect transducers rear-panel lcd provides complete access to control features reinforced 18mm plywood enclosures features: universal rain cover for srx900 products supports: srx906la srx910la srx918s srx928s flexible material for conforming to cables covers lcd audio and data connections unfolds for easy cable and lcd access designed to remain attached