Tang Band W4-927SD
Full-range
4″ / 102 mm
Nominal diameter
70 Hz
Resonance
0.62
Q factor
88 dB
Sensitivity
± 2.05 mm
Linear excursion
50 W
Program Power
Discontinued
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.8
dB
Frequency response
70 - 18000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
70.0
Hz
Mechanical quality factor
QMS
4.37
Electrical quality factor
QES
0.72
Total quality factor
QTS
0.62
Large signal parameters
Maximum linear excursion
xmax
2.05
mm
Air volume displaced at xmax
VD
12
cm³
Power handling
P
25
W
Program power
Pmax
50
W
Voice Coil
Nominal impedance
Z
6
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
0.05
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
3.56
N/A
Motor constant
Bl/√RE
1.5
N/√W
Air gap height
HAG
2.5
mm
Material
Neodymium
Diaphragm
Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
3.5
g
Moving mass (without air load)
MMD
3.2
g
Material
Mica Reinforced Polypropylene
Suspensions
Stiffness
KMS
0.76
N/mm
Compliance
CMS
1310
µm/N
Equivalent volume to the compliance
VAS
6.04
L
Mechanical resistance
RMS
0.35
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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fS
70 Hz
SD
90 cm²
50 - 5000 Hz
QTS
0.60
xmax
3.0 mm
SPL1W
87 dB
Bl/√RE
2.39
Pmax
160 W
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5″Mid Bass
fS
68 Hz
SD
84 cm²
63 - 6300 Hz
QTS
0.61
xmax
5.3 mm
SPL1W
87 dB
Bl/√RE
2.62
Pmax
160 W