B&C Speaker 12NDL88

Woofer

12″ / 320 mm
Nominal diameter
51 Hz
Resonance
0.27
Q factor
95 dB
Sensitivity
± 8 mm
Linear excursion
1400 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
95.1
dB
Frequency response
50 - 3000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
51.0
Hz
Mechanical quality factor
QMS
5.00
Electrical quality factor
QES
0.29
Total quality factor
QTS
0.27

Large signal parameters

Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
418
cm³
Power handling
P
700
W
Program power
Pmax
1400
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
1.3
mH
VC Diameter
88
mm
Winding height
HVC
21
mm
Winding material
Aluminium
Former material
Glass Fibre

Magnet

Flux density
B
1.05
T
Force factor
Bl
19.9
N/A
Motor constant
Bl/√RE
8.9
N/√W
Air gap height
HAG
10
mm
Material
Neodymium Inside Slug

Diaphragm

Effective diameter
258
mm
Effective area
SD
522
cm²
Moving mass
MMS
71
g
Moving mass (without air load)
MMD
62.4
g
Material
Waterproof Front Side

Suspensions

Stiffness
KMS
7.35
N/mm
Compliance
CMS
136
µm/N
Equivalent volume to the compliance
VAS
52
L
Mechanical resistance
RMS
4.55
N·s/m
Spider material
Silicone

Dimensions

Nominal diameter
12
320
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
140
mm
Flange thickness
13
mm
Mounting depth
127
mm
Volume occupied by the driver
2.5
L
Net weight
4.95
kg
B&C Speaker 12NDL88 Impedance
B&C Speaker 12NDL88 SPL
B&C Speaker 12NDL88 Dimensions

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