SEAS E0074-08 W18EX003
Woofer
8″ / 180 mm
Nominal diameter
32 Hz
Resonance
0.3
Q factor
87 dB
Sensitivity
± 5 mm
Linear excursion
280 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.5
dB
Frequency response
40 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
4.85
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.30
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Maximum excursion before damage
xlim
10.0
mm
Air volume displaced at xmax
VD
63
cm³
Power handling
P
160
W
Program power
Pmax
280
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.1
Ω
Inductance (1kHz)
LE
0.2
mH
VC Diameter
39
mm
Winding height
HVC
16
mm
Magnet
Flux density
B
1.3
T
Force factor
Bl
8.5
N/A
Motor constant
Bl/√RE
3.44
N/√W
Air gap height
HAG
6
mm
Weight
0.9
kg
Diaphragm
Effective diameter
127
mm
Effective area
SD
126
cm²
Moving mass
MMS
19
g
Moving mass (without air load)
MMD
17.9
g
Suspensions
Stiffness
KMS
0.77
N/mm
Compliance
CMS
1300
µm/N
Equivalent volume to the compliance
VAS
29
L
Mechanical resistance
RMS
0.79
N·s/m
Dimensions
Nominal diameter
8
″
180
mm
Volume occupied by the driver (estimated)
1.0
L
Net weight
2.45
kg
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