18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.24
Q factor
96 dB
Sensitivity
± 8 mm
Linear excursion
1400 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.1
dB
Frequency response
40 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
8.80
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.24
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
907
cm³
Power handling
P
700
W
Program power
Pmax
1400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
2.1
mH
VC Diameter
100
mm
Winding height
HVC
21
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.15
T
Force factor
Bl
26.0
N/A
Motor constant
Bl/√RE
11.3
N/√W
Air gap height
HAG
11
mm
Material
Ferrite
Diaphragm
Effective diameter
380
mm
Effective area
SD
1134
cm²
Moving mass
MMS
170
g
Moving mass (without air load)
MMD
142.7
g
Material
Waterproof Both Sides
Suspensions
Stiffness
KMS
6.02
N/mm
Compliance
CMS
166
µm/N
Equivalent volume to the compliance
VAS
297
L
Mechanical resistance
RMS
3.64
N·s/m
Spider material
Silicone
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
460
mm
Baffle cutout diameter
422
mm
Overall depth
202
mm
Flange thickness
16
mm
Mounting depth
186
mm
Volume occupied by the driver
9.5
L
Net weight
12.2
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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Bl/√RE
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fS
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fS
33 Hz
SD
1225 cm²
30 - 2500 Hz
QTS
0.26
xmax
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SPL1W
96 dB
Bl/√RE
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Pmax
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