Product Description Model No. SUB-08A SUB-10A Features 8" 10" Magnet Structure: 20 oz 30 oz Power Handling(Max): 300 Watts 450 Watts Voice Coil: 1.5" ASV 2.0" ASV Impedance: 4 Ohms 4 Ohms Free Space Resonance(Fs): 34 Hz 32 Hz Efficiency(1W/1M): 90.5 dB 91.0 dB Frequency Response: 30 Hz-2.2KHz 30Hz -1.8 KHz Model No. SUB-12A SUB-15A Features 12" 15" Magnet Structure: 40 oz 50 oz Power Handling(Max): 600 Watts 750 Watts Voice Coil: 2.0" ASV 2.5" ASV Impedance: 4 Ohms 4 Ohms Free Space Resonance(Fs): 34 Hz 32 Hz Efficiency(1W/1M): 90.5 dB 91.0 dB Frequency Response: 30 Hz-2.2KHz 30Hz -1.8 KHz 8"/10"/12"/15" Car Sub woofer has been presented above, want more similar products, please click parlantes subwoofers, parlantes, Auto subwoofers.