B&C Speakers 12MH32-8 12 in (320 mm) Woofer — 8 Ohm, 400W RMS / 800W Max Pro Audio Driver

Overview: B&C Speakers 12MH32-8 is a professional 12.0 in (320 mm) woofer engineered for high-power mobile and car audio use. It combines a high-sensitivity motor and robust voice coil construction to deliver reliable output across a wide frequency range. Key performance: - Nominal Diameter: 320 mm (12.0 in) - Nominal impedance: 8 Ohms (Minimum impedance: 6.5 Ohms) - Nominal power handling: 400 W - Continuous power handling: 800 W - Sensitivity (1W/1m): 101.0 dB - Frequency range: 50 - 3000 Hz Motor and voice coil: - Voice coil diameter: 76 mm (3.0 in) - Winding material: Copper - Former material: Glass Fibre - Winding depth: 14.0 mm (0.55 in) - Magnetic gap depth: 8.0 mm (0.31 in) - Flux density: 1.4 T - Magnet material: Ferrite Mechanical and cone design: - Cone shape: Radial - Surround shape: Double Roll - Spider: Single - Pole design: T-Pole - Woofer cone treatment: None Thiele/Small and driver parameters: - Resonance frequency (Fs): 53 Hz - Re: 5.2 - Qes: 0.2 - Qms: 7.2 - Qts: 0.19 - Vas: 63.0 dm3 (2.2 ft3) - Sd: 522.0 cm2 (80.9 in2) :: 4.8 % - Xmax: 5.0 mm - Xvar: 7.0 mm - Mms: 54.0 g - Bl: 22.3 Txm - Le: 0.83 mH - EBP: 265 Hz Mounting and shipping information: - Overall diameter: 316 mm (12.4 in) - Bolt circle diameter: 296 mm (11.6 in) - Baffle cutout diameter: 282.0 mm (11.1 in) - Mounting depth: 133 mm (5.24 in) - Flange and gasket thickness: 12 mm (0.47 in) - Air volume occupied by driver: 3.3 dm3 (0.12 ft3) - Net weight: 7.6 kg (16.7 lb) - Shipping units: 1 - Shipping weight: 8.5 kg (18.74 lb) - Shipping box dimensions: 360x360x200 mm (14.17x14.17x7.87 in) This 12MH32-8 driver is built for demanding audio applications where high sensitivity, strong motor control and substantial power handling are required, while keeping the original B&C Speakers engineering specifications intact.