SEAS H1699-08/06 MR18REX/XF
Coaxial
8″ / 180 mm
Nominal diameter
126 Hz
Resonance
0.69
Q factor
90 dB
Sensitivity
± 3 mm
Linear excursion
250 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.4
dB
Frequency response
200 - 25000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
126
Hz
Mechanical quality factor
QMS
2.49
Electrical quality factor
QES
0.96
Total quality factor
QTS
0.69
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Maximum excursion before damage
xlim
6.0
mm
Air volume displaced at xmax
VD
38
cm³
Power handling
P
80
W
Program power
Pmax
250
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
0.43
mH
VC Diameter
39
mm
Winding height
HVC
12
mm
Magnet
Flux density
B
1.1
T
Force factor
Bl
8.3
N/A
Motor constant
Bl/√RE
3.33
N/√W
Air gap height
HAG
6
mm
Weight
0.64
kg
Diaphragm
Effective diameter
127
mm
Effective area
SD
126
cm²
Moving mass
MMS
11.8
g
Moving mass (without air load)
MMD
10.7
g
Suspensions
Stiffness
KMS
10.0
N/mm
Compliance
CMS
100
µm/N
Equivalent volume to the compliance
VAS
3
L
Mechanical resistance
RMS
4.26
N·s/m
Dimensions
Nominal diameter
8
″
180
mm
Volume occupied by the driver (estimated)
0.83
L
Net weight
2.02
kg
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5″Mid-range
fS
141 Hz
SD
79 cm²
140 - 10000 Hz
QTS
0.56
xmax
3.1 mm
SPL1W
90 dB
Bl/√RE
3.08
Pmax
140 W
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5″Mid-range
fS
159 Hz
SD
95 cm²
160 - 16000 Hz
QTS
0.64
xmax
3.5 mm
SPL1W
92 dB
Bl/√RE
3.59
Pmax
450 W
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5.5″Coaxial
fS
158 Hz
SD
95 cm²
160 - 20000 Hz
QTS
0.59
xmax
3.0 mm
SPL1W
90 dB
Bl/√RE
3.44