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B&C 8FMB51 8 Ohm 250W
The FMB series mid-bass woofers from B&C Speakers offer acoustic designers a range of high efficiency, wide bandwidth
alternatives that are not currently available in the B&C range. These full-featured transducers incorporate lower cost ferrite
motors, inside/outside wound copper clad aluminium wire voice coils, weatherproof impregnated paper cones, and a symmetrical
inductance profile. The FMB Series is especially well suited for two-way loudspeaker enclosures
DESIGN
SPECIFICATIONS
PARAMETERS
MOUNTING AND SHIPPING INFO
- Surround Shape Triple Roll
- Cone Shape Curvilinear
- Magnet Material Ferrite ring
- Spider Single
- Pole Design T-Pole
- Woofer Cone Treatment WP Waterproof Impregnated Cone
- Recommended Enclosure 14.0 dm3
- Recommended Tuning 80 Hz
SPECIFICATIONS
- Nominal Diameter 200 mm (8.0 in)
- Nominal Impedance 8 ohms
- Minimum Impedance 5.5 ohms
- Nominal Power Handling 250 W
- Continuous Power Handling 500 W
- Sensitivity 96.5 dB
- Frequency Range 67 - 4500 Hz
- Voice Coil Diameter 51 mm (2.0 in)
- Winding Material Aluminium
- Former Material Glass Fibre
- Winding Depth 15.0 mm (0.59 in)
- Magnetic Gap Depth 8.0 mm (0.31 in)
- Flux Density 1.19 T
PARAMETERS
- Resonance Frequency 67 Hz
- Re 4.7
- Qes 0.31
- Qms 3.07
- Qts 0.28
- Vas 20.7 dm3
- Sd 227.0 cm2
- %u03B7%u2080 1.91 %
- Xmax 5.5 mm
- Xvar 5.0 mm
- Mms 20.2 g
- Bl 11.3 Txm
- Le 0.48 mH
- EBP 216 Hz
MOUNTING AND SHIPPING INFO
- Overall Diameter 225 mm (8.86 in)
- Bolt Circle Diameter 210 mm (8.27 in)
- Baffle Cutout Diameter 187.0 mm (7.36 in)
- Depth 92 mm (3.62 in)
- Flange and Gasket Thickness 9 mm (0.35 in)
- Air Volume Occupied by Driver 1.2 dm3
- Net Weight 4.0 kg (8.82 lb)
- Shipping Weight 4.45 kg (9.81 lb)
- Shipping Box 255x255x150 mm (10.04x10.04x5.91 in)
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