B&C Speaker 4NDF34
Mid Bass
4″ / 100 mm
Nominal diameter
110 Hz
Resonance
0.27
Q factor
91 dB
Sensitivity
± 3.8 mm
Linear excursion
200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.5
dB
Frequency response
110 - 8000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
110
Hz
Mechanical quality factor
QMS
4.20
Electrical quality factor
QES
0.28
Total quality factor
QTS
0.27
Large signal parameters
Maximum linear excursion
xmax
3.8
mm
Air volume displaced at xmax
VD
22
cm³
Power handling
P
100
W
Program power
Pmax
200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
0.23
mH
VC Diameter
34
mm
Winding height
HVC
11
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.25
T
Force factor
Bl
9.0
N/A
Motor constant
Bl/√RE
3.84
N/√W
Air gap height
HAG
7
mm
Material
Neodymium Inside Slug
Diaphragm
Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
6.1
g
Moving mass (without air load)
MMD
5.7
g
Material
Waterproof Both Sides
Suspensions
Stiffness
KMS
2.85
N/mm
Compliance
CMS
351
µm/N
Equivalent volume to the compliance
VAS
1.6
L
Mechanical resistance
RMS
1.0
N·s/m
Dimensions
Nominal diameter
4
″
100
mm
Overall diameter
127
mm
Baffle cutout diameter
103
mm
Overall depth
66
mm
Flange thickness
3
mm
Mounting depth
63
mm
Volume occupied by the driver
0.25
L
Net weight
0.55
kg
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SpeakerbenchSimilar speaker drivers to B&C Speaker 4NDF34
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4″Woofer
fS
104 Hz
SD
54 cm²
100 - 12000 Hz
QTS
0.30
xmax
4.0 mm
SPL1W
89 dB
Bl/√RE
3.51
Pmax
80 W
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4″Coaxial
fS
102 Hz
SD
52 cm²
100 - 18000 Hz
QTS
0.32
xmax
2.0 mm
SPL1W
89 dB
Bl/√RE
3.22
Pmax
200 W
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4″Full-range
fS
94 Hz
SD
50 cm²
80 - 18000 Hz
QTS
0.27
xmax
3.0 mm
SPL1W
88 dB
Bl/√RE
3.8