The S8018 II high-efficiency subwoofer is the ideal low-frequency extension to complement RCF installed systems. The low-frequency transducer is a hypervented, high-excursion RCF Precision 18” woofer with a 4” inside/outside voice coil to minimize power compression and extend the life of the product. Using bass-reflex loading, the subwoofer design ensures an efficient acoustic response down to 30 Hz. The Baltic birch plywood enclosure is painted with black, heavy-duty, textured epoxy. The front is protected by a strong powder-coated metal grille. The cabinet features two Neutrik Speakon™ connectors in a recessed input plate. An M20 pole mount adapter is provided on the top of the cabinet, and integrated hand carry points are on the cabinet sides.