B & C Speaker 8FCX51
Specifications
Nominal diameter 210 mm (8.0 in)
Nominal impedance 8 Ω
Minimum impedance lf 6.0 Ω
Minimum impedance hf 7.0 Ω
Frequency range 69 - 18000 Hz
Dispersion angle1 100 °
Magnet material Ceramic
Specifications LF Unit
LF Sensitivity2 96.0 dB
LF Nominal Power Handling3 250 W
LF Continuos Power Handling4 500 W
LF Voice Coil Diameter 51 mm (2.0 in)
LF Winding Material Aluminium
Specifications HF Unit
HF Sensitivity5 104.0 dB
HF Nominal Power Handling6 50 W
HF Continuos Power Handling7 100 W
HF Voice Coil Diameter 44 mm (1.7 in)
HF Winding Material Aluminium
Diaphragm material Polyimide
Recommended crossover8 1.8 kHz
Parameters
Fs 69 Hz
Re 5 Ω
Qes 0.36
Qms 6.3
Qts 0.34
Vas 16.0 dm3 (0.56 ft3)
Sd 220.0 cm2 (34.1 in2)
η₀ 1.4 %
Xmax 6.5 mm
Xvar 6.0 mm
Mms 22 g
Bl 11.5 Txm
Le 0.9 mH
EBP 191 Hz
Mounting And Shipping Info
Overall diameter 225 mm (8.8 in)
Bolt circle diameter 210 mm (8.3 in)
Baffle cutout
diameter 187 mm (7.4 in)
Depth 118 mm (4.64 in)
Flange and gasket
thickness 10 mm (0.37 in)
Net weight 5.1 kg (11.2 lb)
Shipping units 1
Shipping weight 6 kg (12.3 lb)
Shipping box 321x294x193 mm
(12.6x11.6x7.6 in)
Service Kit
Service kit lf RCK008FCX518
Replacement diaphragm MMD4008
