Tang Band W4-1720
Woofer
4″ / 102 mm
Nominal diameter
60 Hz
Resonance
0.42
Q factor
87 dB
Sensitivity
± 5 mm
Linear excursion
60 W
Program Power
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Available on (affiliate link)
Parts Express
$$
Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.7
dB
Frequency response
60 - 8000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
60.0
Hz
Mechanical quality factor
QMS
2.33
Electrical quality factor
QES
0.51
Total quality factor
QTS
0.42
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
29
cm³
Power handling
P
30
W
Program power
Pmax
60
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.8
Ω
Inductance (1kHz)
LE
0.04
mH
VC Diameter
32
mm
Magnet
Force factor
Bl
3.82
N/A
Motor constant
Bl/√RE
1.96
N/√W
Air gap height
HAG
17
mm
Material
Ferrite
Diaphragm
Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
5
g
Moving mass (without air load)
MMD
4.7
g
Material
Paper
Suspensions
Stiffness
KMS
0.78
N/mm
Compliance
CMS
1284
µm/N
Equivalent volume to the compliance
VAS
5.92
L
Mechanical resistance
RMS
0.81
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
4
″
102
mm
Volume occupied by the driver (estimated)
0.78
L
Net weight
1.913
kg
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SpeakerbenchSimilar woofers to Tang Band W4-1720
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5″Mid Bass
fS
63 Hz
SD
85 cm²
65 - 12000 Hz
QTS
0.46
xmax
5.5 mm
SPL1W
86 dB
Bl/√RE
2.78
Pmax
100 W
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5.5″Full-range
fS
62 Hz
SD
71 cm²
50 - 26000 Hz
QTS
0.49
xmax
5.0 mm
SPL1W
85 dB
Bl/√RE
2.05
Pmax
80 W