What is it? A trio of subwoofers suitable for installed sound applications. Details The 1kW (RMS) S8015 II compact bass reflex sub houses a 15" high-efficiency driver with a 4.0" voice-coil and ceramic magnet capable of delivering up to 133dB SPL at frequencies down to 35Hz. Fitted with a M20 pole mount, rubber feet and dual recessed handles, the rectangular enclosure is made from Baltic birch plywood and finished with textured, polyurethane black paint and powder-coated front steel grille. The larger 1.5kW (RMS) S8018 II model offers a similar overall design but producing higher 137dB maximum SPL from the 18" driver with a frequency response extending down to 35Hz. The largest model in the range - the 3kW S8028 II sub - incorporates dual hypervented 18" drivers in a bass reflex enclosure capable of delivering 141dB maximum SPL down to 30Hz. And another thing... All three models are fitted with Speakon NL4 input/output terminals.