8FMB51
The FMB series mid-bass woofers from B&C Speakers offer acoustic designers a new 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 aluminum wire voice coils, weatherproof impregnated paper cones, and a symmetrical inductance profile. The FMB Series is especially well suited for two-way loudspeaker enclosures.
Features
500 W continuous program power capacity
51 mm (2 in) aluminium voice coil
68 - 4500 Hz response
96 dB sensitivity
Ventilated voice coil gap for reduced power compression
Specifications
Nominal Diameter
200 mm (8 in)
Nominal Impedance
16 Ω
Minimum Impedance
11 Ω
Nominal Power Handling
250 W
Continuous Power Handling
500 W
Sensitivity
96 dB
Frequency Range
68 - 4500 Hz
Voice Coil Diameter
51 mm (2 in)
Winding Material
Aluminium
Former Material
Glass Fibre
Winding Depth
15 mm (0.59 in)
Magnetic Gap Depth
8 mm (0.31 in)
Flux Density
1.19 T
Woofer Cone Treatment
Waterproof Impregnated Cone
Parameters
Fs
68 Hz
Re
9.8 Ω
Qes
0.43
Qms
4.1
Qts
0.39
Vas
20.5 dm³ (0.72 ft³)
Sd
227 cm² (35.19 sq²)
η0
1.4 %
Xmax
5.5 mm
Xvar
5 mm
Mms
19.7 g
Bl
13.73 Tm
Le
0.83 mH
EBP
158 Hz
Design
Surround Shape
Triple Roll
Cone Shape
Curvilinear
Magnet Material
Ferrite Ring
Spider
Single
Pole Design
T-Pole
Woofer Cone Treatment
Waterproof Impregnated Cone
Recommended Enclosure
14 dm³ (0.49 ft³)
Recommended Tuning
80 Hz
Mounting and Shipping Info
Overall Diameter
225 mm (8.86 in)
Bolt Circle Diameter
210 mm (8.27 in)
Baffle Cutout Diameter
187 mm (7.36 in)
Depth
92 mm (3.62 in)
Flange and Gasket Thickness
9 mm (0.35 in)
Air Volume Occupied by Driver
1.1 dm³ (0.04 ft³)
Net Weight
3.4 kg (7.5 lb)
Shipping Units
1 pcs
Shipping Weight
3.85 kg (8.49 lb)
Shipping Box