Black.Book shelf. Enclosure type bass reflex.Magnetic shielded.Passive speaker.120 watts power handling capacity RMS.80 - 50,000 rated frequency range (Hz)1 speaker units: bass chassis.Speaker units: bass chassis diameter 13cm.Kevlar H.O.P bass chassis type.2.5 speaker units: tweeter diameter 25cm.Size (H)25.5, (W)17.0, (D)18.6cm.