B&C Speaker 12FW64

Mid Bass

12″ / 320 mm
Nominal diameter
55 Hz
Resonance
0.29
Q factor
96 dB
Sensitivity
± 5 mm
Linear excursion
500 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
96.1
dB
Frequency response
55 - 3000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
55.0
Hz
Mechanical quality factor
QMS
3.50
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.29

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
261
cm³
Power handling
P
250
W
Program power
Pmax
500
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
1.0
mH
VC Diameter
64
mm
Winding height
HVC
14
mm
Winding material
Aluminium
Former material
Glass Fibre

Magnet

Flux density
B
1.3
T
Force factor
Bl
15.5
N/A
Motor constant
Bl/√RE
6.8
N/√W
Air gap height
HAG
8
mm
Material
Ferrite

Diaphragm

Effective diameter
258
mm
Effective area
SD
522
cm²
Moving mass
MMS
47
g
Moving mass (without air load)
MMD
38.4
g
Material
Waterproof Front Side

Suspensions

Stiffness
KMS
5.1
N/mm
Compliance
CMS
196
µm/N
Equivalent volume to the compliance
VAS
64
L
Mechanical resistance
RMS
4.64
N·s/m

Dimensions

Nominal diameter
12
320
mm
Overall diameter
315
mm
Baffle cutout diameter
283
mm
Overall depth
136
mm
Flange thickness
13
mm
Mounting depth
123
mm
Volume occupied by the driver
3.0
L
Net weight
5.65
kg
B&C Speaker 12FW64 Impedance
B&C Speaker 12FW64 SPL
B&C Speaker 12FW64 Dimensions

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