B&C 8CX21 8-Inch Extra Low Frequeny Coaxial Driver - 200W RMS, 8 Ohm

The B&C 8CX21 is a custom model based on the 8CX21, but with extended bass response achieved with a new design and a rubber edge surround.

B&C 8CX21 8-Inch Coaxial Driver Specifications

- Nominal Basket Diameter: 210 mm (8.0 inches)
- Nominal Impedance: 8 Ω
- Minimum Impedance:
  - LF: 6.8 Ω
  - HF: 7.2 Ω
- Frequency Response: 75 - 20000 Hz
- Dispersion Angle: 100°
- Magnet Material: Ceramic
- Connection: Spade Terminals

Specifications for LF Unit:
- LF Sensitivity: 94.0 dB
- LF Nominal impedance: 8 Ω
- LF Nominal Power Handling: 200 W
- LF Continuous Power Handling: 400 W
- LF Voice Coil Diameter: 52 mm (2.0 inches)
- LF Winding Material: Copper

Specifications for HF Unit:
- HF Sensitivity: 102.0 dB
- HF Nominal impedance: 8 Ω
- HF Nominal Power Handling: 25 W
- HF Continuous Power Handling: 50 W
- HF Voice Coil Diameter: 36 mm (1.4 inches)
- HF Winding Material: Aluminium
- Diaphragm material: Melinex
- Recommended crossover: 2.2 kHz

Parameters:
- Fs: 53 Hz
- Re: 5.0 Ω
- Qes: 0.282
- Qms: 9.831
- Qts: 0.274
- Vas: 19.1 dm³
- Sd: 220.0 cm²
- η₀: 0.99 %
- Xmax: ± 6.3 mm
- Xvar: ± 6.0 mm
- Mms: 31.6 g
- Bl: 13.72 Txm
- Le: 1.02 mH

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: 135 mm (5.3 inches)
- Flange and gasket thickness: 11 mm (0.4 inches)
- Net weight: 4.0 kg