Dimensions | Metric :6" W x 6" D x 48-1/2" H (with base) | 15.2 x 15.2 x 123.2 cm Driver Complement :One 1" pure aluminum dome tweeter; Two 5-1/4" high definition midrange drivers; Two 5-1/4" high definition bass drivers; Two 5-1/4" pressure coupled bass radiators Frequency Response :20 Hz – 30 kHz Impedance :Compatible with 8 Ohms outputs Sensitivity :92 dB Recommended Associated Amplifier Power :20 – 250 watts Inputs :One pair of 5 way binding posts A/V Receiver Crossover Setting :60 Hz Enclosure :Aircraft grade extruded aluminum Available Finishes :Gloss Black; Polished Silver Accessories :Plastic Foot Tippers; Isolation Spikes Packaging :One to a carton Weight :37 lbs | 16.8 kg