18 SOUND 12MB720-8 Midbass Driver — 500 W / 1000 W, 8-Ohm, 310 mm (12.2") for Compact 2-Way Reflex / Pro Audio

GENERAL Brand: 18 SOUND Model Number: 12MB720-8 12MB720 UPC: 8054752268739 Overview The 18 SOUND 12MB720-8 is a robust midbass driver engineered for high sensitivity and strong power handling. It is designed to perform as a bass/mid unit in compact two-way reflex cabinets and can equally serve as a dedicated midrange driver in multi-way touring rigs or fixed-install concert and arena systems. Electrical and Power - Nominal Impedance : 8 - Minimum Impedance : 6.4 - Nominal Power Handling : 500 W - Continuous Power Handling : 1000 W - Sensitivity : 100.0 dB - Frequency Range : 90 - 4000 Hz Voice Coil and Motor - Voice Coil Diameter : 75 mm 3.0 in - Winding Material : copper - Winding Depth : 15.0 mm 0.59 in - Magnetic Gap Depth : 10.0 mm 0.39 in Mechanical Design - Surround Shape : M-roll - Cone Shape : Curvilinear - Magnet Material : Ferrite - Woofer Cone Treatment : Weather protected - Recommended Enclosure : 25.0 dm3 0.88 ft3 - Recommended Tuning : 60 Hz Thiele/Small Parameters - Resonance Frequency : 46 Hz - Re : 5.0 - Qes : 0.2 - Qms : 10.3 - Qts : 0.2 - Vas : 81.0 dm3 2.86 ft3 - Sd : 531.0 cm2 82.31 in2 - : 3.8 % - Xmax : 5.0 mm - Xvar : 6.1 mm - Mms : 59.0 g - Bl : 20.5 Txm - Le : 0.79 mH - EBP : 230 Hz Mounting and Shipping - Overall Diameter : 310 mm 12.2 in - Bolt Circle Diameter : 295 mm 11.61 in - Baffle Cutout Diameter : 283.0 mm 11.14 in - Depth : 142 mm 5.59 in - Flange and Gasket Thickness : 13 mm 0.52 in - Net Weight : 7.8 kg 17.2 lb - Shipping Weight : 8.3 kg 18.3 lb This driver combines a weather-protected curvilinear cone and a ferrite motor with a 75 mm copper voice coil to deliver reliable midbass performance in portable and installed professional sound systems.