Definitive Technology BP8 Tower Loudspeaker (Single, Black) (Discontinued by Manufacturer) Single bipolar tower loudspeaker Equipped with two 5.25-inch mineral-filled homopolymer-coned, cast-magnesium basket bass/midrange drivers Frequency response: 22Hz - 30kHz Equipped with two 1-inch pure aluminum dome tweeters Finished with piano-gloss black with wraparound black grill cloth