Tang Band W4-1337SD
SD
SDFFull-range
4″ / 102 mm
Nominal diameter
70 Hz
Resonance
0.37
Q factor
88 dB
Sensitivity
± 3 mm
Linear excursion
50 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.1
dB
Frequency response
70 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
70.0
Hz
Mechanical quality factor
QMS
1.51
Electrical quality factor
QES
0.49
Total quality factor
QTS
0.37
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Air volume displaced at xmax
VD
17
cm³
Power handling
P
25
W
Program power
Pmax
50
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.8
Ω
Inductance (1kHz)
LE
0.02
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
5.37
N/A
Motor constant
Bl/√RE
2.06
N/√W
Air gap height
HAG
10
mm
Material
Neodymium
Diaphragm
Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
4.6
g
Moving mass (without air load)
MMD
4.3
g
Material
Titanium
Suspensions
Stiffness
KMS
0.95
N/mm
Compliance
CMS
1053
µm/N
Equivalent volume to the compliance
VAS
4.86
L
Mechanical resistance
RMS
1.34
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
4
″
102
mm
Volume occupied by the driver (estimated)
0.28
L
Net weight
0.721
kg
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SpeakerbenchSimilar speaker drivers to Tang Band W4-1337SD
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4″Mid-range
fS
66 Hz
SD
55 cm²
66 - 5000 Hz
QTS
0.32
xmax
2.0 mm
SPL1W
88 dB
Bl/√RE
2.53
Pmax
80 W
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3 x 5″Full-range
fS
85 Hz
SD
47 cm²
85 - 15000 Hz
QTS
0.40
xmax
3.0 mm
SPL1W
88 dB
Bl/√RE
1.6
Pmax
40 W
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5″Mid Bass
fS
73 Hz
SD
85 cm²
70 - 4000 Hz
QTS
0.41
xmax
3.4 mm
SPL1W
87 dB
Bl/√RE
3.23
Pmax
180 W