JL AUDIO Subwoofer 12W6v3-D4 - Power Handling 600 watts RMS - Impedance Dual 4 ?- Aluminium-Diecast-Basket with Trim-Ring - Dual-Magnet- Fs 26.9 Hz - Qes 0.49 - Qms 9.3 - Qts 0.46- Re (serial) 6.5 Ohm - Vas 54.4 L - 85.4 dB (1W/1m)- Cone-Area 486 cm? - linear Xmax +