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About 7 DRIVER 12ML570S4 12-inch Woofer
Innovative design with air cooled vented and screened magnet structure. Features lower dynamic compression which means less reduction or compression of an audio signal's dynamic range 12-in Diameter High Power Woofer. Ideal for automotive and home use, monitors, theaters, churches, clubs. Maximum musical power: 1,140 Maximum Watts. 4 Ohms Impedance. Frequency response - 50 to 3600hz. Resonance frequency - 78.6hz. Q mechanical (qms) - 8,008. Equivalent volume (vas) - 29.390 l. Compliance (cms) - 79,354u m / n. Mass diaphragm (mmd) 45.044 g. Total mass (mms) - 51.681 g. Cone tour without distortion (x max) - +/- 7 mm. Cone effective area (sd) - 0.0510 sq.m. Resistance (re) - 3.0 ohms / vdc. Product bl - 10,338 tm. RMS Power Capacity - 570w. Q total (qts) - 0.658. No (efficiency reference) - 1,926%. Sensitivity (at 1w, 1 m) -free-air - 94,864db (spl). Flow density in the gap - 10.200 gauss. Nominal diameter - 12 inches. Ferrite material - barium. Ferrite diameter - 169 x 24 mm. Coil diameter - 3 inches. Coil height - 18mm. Coil wire material - ccaw. Coil wire section - round. Coil body material - Dupont Kapton polyimide film. Gap height - 7mm. Housing material - steel
