Tang Band W4-1658SB
Woofer
4″ / 102 mm
Nominal diameter
55 Hz
Resonance
0.39
Q factor
86 dB
Sensitivity
± 4.5 mm
Linear excursion
90 W
Program Power
Discontinued
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.3
dB
Frequency response
55 - 6000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
55.0
Hz
Mechanical quality factor
QMS
8.84
Electrical quality factor
QES
0.41
Total quality factor
QTS
0.39
Large signal parameters
Maximum linear excursion
xmax
4.5
mm
Air volume displaced at xmax
VD
35
cm³
Power handling
P
45
W
Program power
Pmax
90
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.8
Ω
Inductance (1kHz)
LE
0.14
mH
VC Diameter
50
mm
Magnet
Force factor
Bl
5.62
N/A
Motor constant
Bl/√RE
2.88
N/√W
Air gap height
HAG
6
mm
Material
Neodymium
Diaphragm
Effective diameter
100
mm
Effective area
SD
79
cm²
Moving mass
MMS
10
g
Moving mass (without air load)
MMD
9.6
g
Material
Polypropylene
Suspensions
Stiffness
KMS
1.18
N/mm
Compliance
CMS
848
µm/N
Equivalent volume to the compliance
VAS
7.42
L
Mechanical resistance
RMS
0.39
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
4
″
102
mm
Volume occupied by the driver (estimated)
0.14
L
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SpeakerbenchSimilar woofers to Tang Band W4-1658SB
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4″Mid-range
fS
55 Hz
SD
55 cm²
55 - 8000 Hz
QTS
0.37
xmax
2.0 mm
SPL1W
86 dB
Bl/√RE
1.8
Pmax
60 W
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4″Mid-range
fS
53 Hz
SD
55 cm²
53 - 8000 Hz
QTS
0.37
xmax
2.0 mm
SPL1W
86 dB
Bl/√RE
1.82
Pmax
60 W
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