Polk Audio PSW505 12-Inch Powered Subwoofer (Single Black)

"Click here http://www.amazon.com/gp/product/B000092TT0?tag=mainantoko-20
Polk Audio PSW505 12-Inch Powered Subwoofer (Single Black)
Single powered subwoofer in black for use with stereo or home theater speaker systems
Equipped with one 12-inch long-throw woofer not magnetically shielded
Slot-load venting minimizes turbulence noise and distortion
Rated to 300 watts of continuous power 460W peak
Measures 16-18 x 15-18 x 18-316 inches HxWxD
Polk Audio PSW505 12-Inch Powered Subwoofer (Single Black)
Click here http://www.amazon.com/gp/product/B000092TT0?tag=mainantoko-20"