Diameter: 16.5 cm / 6.50“ Mounting diameter: 147 mm / 5.79“ Mounting depth: 99mm / 3.90“ Voice coil: 50 mm / 2″ Copper Cone: Reinforced paper Power Handling: 350 W RMS, 700W SPL Power Impedance: 2 x 2 Ohm SPL: 79 dB Xmax: 22 mm / 0.866″ Fs: 49.5 Hz Qts: 0.62 Vas: 2.2L.