SEAS H1456-08 ER18RNX
Woofer
8″ / 180 mm
Nominal diameter
37 Hz
Resonance
0.32
Q factor
88 dB
Sensitivity
± 6 mm
Linear excursion
250 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.2
dB
Frequency response
45 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.0
Hz
Mechanical quality factor
QMS
1.58
Electrical quality factor
QES
0.39
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Maximum excursion before damage
xlim
11.0
mm
Air volume displaced at xmax
VD
82
cm³
Power handling
P
80
W
Program power
Pmax
250
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.9
Ω
Inductance (1kHz)
LE
0.67
mH
VC Diameter
39
mm
Winding height
HVC
18
mm
Magnet
Flux density
B
1.0
T
Force factor
Bl
7.2
N/A
Motor constant
Bl/√RE
2.96
N/√W
Air gap height
HAG
6
mm
Weight
0.64
kg
Diaphragm
Effective diameter
132
mm
Effective area
SD
136
cm²
Moving mass
MMS
14
g
Moving mass (without air load)
MMD
12.8
g
Suspensions
Stiffness
KMS
0.77
N/mm
Compliance
CMS
1300
µm/N
Equivalent volume to the compliance
VAS
32
L
Mechanical resistance
RMS
2.2
N·s/m
Dimensions
Nominal diameter
8
″
180
mm
Volume occupied by the driver (estimated)
0.78
L
Net weight
1.91
kg
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SpeakerbenchSimilar woofers to SEAS H1456-08 ER18RNX
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6″Coaxial
fS
36 Hz
SD
119 cm²
QTS
0.31
xmax
4.7 mm
SPL1W
88 dB
Bl/√RE
2.85
Pmax
80 W
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8″Woofer
fS
36 Hz
SD
126 cm²
40 - 2500 Hz
QTS
0.31
xmax
6.0 mm
SPL1W
88 dB
Bl/√RE
2.99
Pmax
250 W
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