oduct description Beyma 12" sub 8 ohm super powerful Very high efficiency (5.2 %) used in car audio and dj speakers GRAPH dB FUND. H2 H3 20 40 100 200 400 1k 2k 4k 10k 20k 0 50 100 TECHNICAL SPECIFICATIONS Nominal diameter 300 mm 12 in Nominal impedance 8 ohm Minimum impedance 5.8 ohm Power capacity 500 W AES Program power 1000 W Sensitivity 98 dB 1 W @ 1 m @ ZN Frequency range 50-5500 Hz Recommended enclosure volume 30 / 100 l 1.06 / 3.53 ft.³ Voice coil diameter 63.5 mm 2.5 in BL factor 17.2 N / A Moving mass 0.059 kg Winding length 19.5 mm Air gap height 10 mm Xdamage pp 40 mm