JL AUDIO 10W7 - Car subwoofer driver - 10.5" Free Air Resonance (Fs): 30.6 Hz Equivalent Compliance (Vas): 1.28 cu. ft. / 36.1 liters Thermal Power Handling (Pt): 750W Driver Displacement: 0.09 cu. ft. / 2.5 liters Net Weight: 30 lbs. / 13.6 kg