B&C Speakers 12NW100-4 LF Drivers 12 inch NEO WOOFER 4 Ohm Neodymium Inside Slug Magnet 100 mm Copper Voice Coil 2000 Watts Power Capacity

* Nominal Diameter: 320 mm (12.0 in). * Nominal Impedance: 4 Ohms. * Minimum Impedance: 5 Ohms. * Nominal Power Handling: 1000 W. * Continuous power handling: 2000 W. * Sensitivity (1W/1m): 96.0 dB. * Frequency Range: 45 - 1500 Hz. * Voice Coil Diameter: 100 mm (4.0 in). * Winding Material: Copper. * Former Material: Glass Fibre. * Winding Depth: 25.0 mm (1.0 in). * Magnetic Gap Depth: 12.0 mm (0.5 in). * Flux Density: 1.2 TDesign. * Surround Shape: Triple Roll. * Cone Shape: Radial. * Magnet Material: Neodymium Inside Slug. * Spider: Double Silicone. * Pole Design: T-Pole. * Woofer Cone Treatment: TWP Waterproof Both Sides. * Recommended Enclosure: 50.0 dm3 (1.77 ft3). * Recommended Tuning: 50 HzParameters4. * Resonance Frequency: 42 Hz. * Overall Diameter: 319 mm (12.5 in). * Bolt Circle Diameter: 299 mm (11.8 in). * Baffle Cutout Diameter: 281.0 mm (11.1 in). * Depth: 137 mm (5.4 in). * Flange and Gasket Thickness: 13 mm (0.5 in). * Air Volume Occupied by Driver: 2.7 dm3 (0.09 ft3). * Net Weight: 8.2 kg (18.0 lb). * Shipping Units: 1. * Shipping Weight: 9.1 kg (20.06 lb). * Shipping Box: 360x360x200 mm (14.17x14.17x7.87 in)Service Kit. * Recone kit: RCK12NW1008D