Features 1.2" KSV voice Coil Ferrite Oxide Magnet Enhanced Midbass Wider Frequency Response Paper cone Cloth surround Sold in Single Specifications Nominal Power Handling: 175 Watts Peak Power Handling: 350 Watts Impedance: 8 Ω Resonant Frequency (fs):79.8 Hz D.C. Voice Coil Resistance (Re): 5.8 Ω Mechanical Quality Factor (Qms): 6.46 Electrical Quality Factor (Qes): 0.96 Total Quality Factor (Qts): 0.83 Equivalent Air Volume (Vas): 26 L Cms: 0.31 mm/N Mass of Diaphragm/Coil (Mms): 12.7 gr Force