B&C Speaker 12BG76
Subwoofer
12″ / 320 mm
Nominal diameter
44 Hz
Resonance
0.41
Q factor
90 dB
Sensitivity
± 9.5 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.0
dB
Frequency response
45 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
44.0
Hz
Mechanical quality factor
QMS
5.90
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.41
Large signal parameters
Maximum linear excursion
xmax
9.5
mm
Air volume displaced at xmax
VD
496
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
1.1
mH
VC Diameter
76
mm
Winding height
HVC
25
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.25
T
Force factor
Bl
22.7
N/A
Motor constant
Bl/√RE
9.77
N/√W
Air gap height
HAG
11.5
mm
Material
Neodymium Ring
Diaphragm
Effective diameter
258
mm
Effective area
SD
522
cm²
Moving mass
MMS
148
g
Moving mass (without air load)
MMD
139.4
g
Material
Waterproof Both Sides
Suspensions
Stiffness
KMS
11.63
N/mm
Compliance
CMS
86
µm/N
Equivalent volume to the compliance
VAS
32
L
Mechanical resistance
RMS
6.93
N·s/m
Spider material
Silicone
Dimensions
Nominal diameter
12
″
320
mm
Overall diameter
315
mm
Baffle cutout diameter
284
mm
Overall depth
161
mm
Flange thickness
21
mm
Mounting depth
140
mm
Volume occupied by the driver
2.0
L
Net weight
5.3
kg
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SD
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45 - 2500 Hz
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SD
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40 - 900 Hz
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SD
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50 - 2500 Hz
QTS
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xmax
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SPL1W
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