8″ / 200 mm
Nominal diameter
75 Hz
Resonance
0.57
Q factor
91 dB
Sensitivity
± 7 mm
Linear excursion
400 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.6
dB
Frequency response
75 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
75.0
Hz
Mechanical quality factor
QMS
5.22
Electrical quality factor
QES
0.64
Total quality factor
QTS
0.57
Large signal parameters
Maximum linear excursion
xmax
7.0
mm
Air volume displaced at xmax
VD
154
cm³
Power handling
P
200
W
Program power
Pmax
400
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.6
Ω
Inductance (1kHz)
LE
0.15
mH
VC Diameter
51
mm
Winding height
HVC
16
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.05
T
Force factor
Bl
7.3
N/A
Motor constant
Bl/√RE
4.53
N/√W
Air gap height
HAG
8
mm
Material
Neodymium Inside Slug
Diaphragm
Effective diameter
167
mm
Effective area
SD
220
cm²
Moving mass
MMS
27
g
Moving mass (without air load)
MMD
24.5
g
Material
Waterproof Both Sides
Suspensions
Stiffness
KMS
6.17
N/mm
Compliance
CMS
162
µm/N
Equivalent volume to the compliance
VAS
10.1
L
Mechanical resistance
RMS
2.44
N·s/m
Dimensions
Nominal diameter
8
″
200
mm
Overall diameter
225
mm
Baffle cutout diameter
187
mm
Overall depth
90
mm
Flange thickness
11
mm
Mounting depth
79
mm
Volume occupied by the driver
1.1
L
Net weight
1.85
kg
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar woofers to B&C Speaker 8NDL51
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8″Woofer
fS
70 Hz
SD
220 cm²
70 - 3000 Hz
QTS
0.47
xmax
7.0 mm
SPL1W
91 dB
Bl/√RE
4.67
Pmax
400 W
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8″Woofer
fS
82 Hz
SD
227 cm²
80 - 3000 Hz
QTS
0.52
xmax
6.4 mm
SPL1W
92 dB
Bl/√RE
4.51
Pmax
400 W
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8″Mid-range
fS
75 Hz
SD
213 cm²
75 - 4000 Hz
QTS
0.46
xmax
4.0 mm
SPL1W
91 dB
Bl/√RE
4.92
Pmax
200 W