SEAS E0021-08S W12CY001
Woofer
4.5″ / 120 mm
Nominal diameter
45 Hz
Resonance
0.36
Q factor
83 dB
Sensitivity
± 3 mm
Linear excursion
200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
83.0
dB
Frequency response
60 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
45.0
Hz
Mechanical quality factor
QMS
2.50
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.36
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Maximum excursion before damage
xlim
4.5
mm
Air volume displaced at xmax
VD
15
cm³
Power handling
P
70
W
Program power
Pmax
200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
0.43
mH
VC Diameter
26
mm
Winding height
HVC
12
mm
Magnet
Flux density
B
1.1
T
Force factor
Bl
5.4
N/A
Motor constant
Bl/√RE
2.28
N/√W
Air gap height
HAG
6
mm
Weight
0.42
kg
Diaphragm
Effective diameter
80
mm
Effective area
SD
50
cm²
Moving mass
MMS
7.5
g
Moving mass (without air load)
MMD
7.2
g
Suspensions
Stiffness
KMS
0.59
N/mm
Compliance
CMS
1700
µm/N
Equivalent volume to the compliance
VAS
6
L
Mechanical resistance
RMS
0.87
N·s/m
Dimensions
Nominal diameter
4.5
″
120
mm
Volume occupied by the driver (estimated)
0.48
L
Net weight
1.21
kg
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SD
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QTS
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xmax
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SPL1W
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SD
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fS
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SD
54 cm²
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QTS
0.38
xmax
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SPL1W
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Bl/√RE
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