Polk Audio Monitor60 Series II Floorstanding Loudspeaker (Black) Single Type: Floorstanding Speakers Driver Units: Tweeter Complement: one 1 cloth dome Driver Complement: three 5.25 Bi-Laminate driver Power Rating: 20-200W Frequency Response: 38Hz-25kHz Nominal Impedance: 8 Ohms Sensitivity: 90db Connectors: Inputs: Dual (bi-amp) 5 way binding posts Color: Black