SSW-15A-3A			250W+2x150W/3 AMP 15 inch Active Subwoofer, plastic cabinet, woofer:4inch voice coil,100OZ,RMS600W
SSW-18A-3A			600Watts ,18inch Active Subwoofer, plastic speaker, woofer:4inch voice coil,100OZ,RMS800W
SSW-15A-3			600Watts, passive 15inch plastic subwoofer, woofer:4inch voice coil,100OZ,RMS600W
SSW-18A-3			800Watts, Passive 18inch plastic subwoofer, woofer:4inch voice coil,100OZ,RMS800W