Dual 15" sealed 600W subwoofer
Powered subwoofer for MSP speakers, 180 watts, 10 Inch woofer
Audiophile dual 12 inch compact subwoofer system
Single 18 Inch subwoofer
Powered subwoofer, 800 watts, 15 Inch woofer
This is a nice quality Emerson Subwoofer. It features an impedance of 8 ohms, and includes the speaker wire.