B&C 8FCX51 8-Inch Coaxial Driver - 250W RMS, 8 Ohm

The B&C 8FCX51 boasts legendary B&C technology made with their famously critical quality control, allowing loudspeaker designs with appropriately scaled performance.

B&C 8FCX51 8-Inch Coaxial Driver Features

- 500 W continuous program power capacity
- 100° nominal coverage
- 70 - 18000 Hz response
- 96 dB sensitivity
- 20.1 mm (0.79-inch) HF unit exit diameter

B&C 8FCX51 8-Inch Coaxial Driver Specifications

- Nominal Basket Diameter: 210 mm (8.0 inches)
- Nominal Impedance: 8 Ω
- Minimum Impedance:
  - LF: 6.0 Ω
  - HF: 7.0 Ω
- Frequency Response: 70 - 18000 Hz
- Dispersion Angle: 100°
- Woofer Cone Treatment: WP Waterproof Front Side
- Magnet Material: Ferrite
- Connection: Spade Terminals

Specifications for LF Unit:
- LF Sensitivity: 96.0 dB
- LF Nominal impedance: 8 Ω
- LF Nominal Power Handling: 250 W
- LF Continuous Power Handling: 500 W
- LF Voice Coil Diameter: 51 mm (2.0 inches)
- LF Winding Material: Aluminium
- LF Flux Density: 1.0 T
- Former Material: Glass Fibre
- Winding Depth: 17.5 mm (0.69 inches)
- Magnetic Gap Depth: 8.0 mm (0.31 inches)

Specifications for HF Unit:
- HF Sensitivity: 104.0 dB
- HF Nominal impedance: 8 Ω
- HF Nominal Power Handling: 50 W
- HF Continuous Power Handling: 100 W
- HF Voice Coil Diameter: 44 mm (1.7 inches)
- HF Winding Material: Aluminium
- HF Flux Density: 1.8 T
- Diaphragm material: Polyimide
- Recommended crossover: 1.8 kHz
- Inductance: 0.11 mH

Parameters:
- Fs: 69 Hz
- Re: 4.9 Ω
- Qes: 0.36
- Qms: 6.3
- Qts: 0.34
- Vas: 16.0 dm³
- Sd: 220.0 cm²
- η₀: 1.4 %
- Xmax: ± 6.5 mm
- Xvar: ± 6.0 mm
- Mms: 22.0 g
- Bl: 11.5 Txm
- Le: 0.9 mH
- EBP: 191 Hz

Physical:
- Overall diameter: 225 mm (8.8 inches)
- Bolt circle diameter: 210 mm (8.3 inches)
- Baffle cutout diameter: 187 mm (7.4 inches)
- Depth: 118 mm (4.64 inches)
- Flange and gasket thickness: 10 mm (0.37 inches)
- Net weight: 5.0 kg