18″ / 462 mm
Nominal diameter
29 Hz
Resonance
0.27
Q factor
94 dB
Sensitivity
± 15 mm
Linear excursion
3000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.0
dB
Frequency response
30 - 800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
29.0
Hz
Mechanical quality factor
QMS
11.90
Electrical quality factor
QES
0.28
Total quality factor
QTS
0.27
Large signal parameters
Maximum linear excursion
xmax
15.0
mm
Air volume displaced at xmax
VD
1838
cm³
Power handling
P
1500
W
Program power
Pmax
3000
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.5
Ω
Inductance (1kHz)
LE
1.55
mH
VC Diameter
100
mm
Magnet
Force factor
Bl
22.8
N/A
Motor constant
Bl/√RE
14.4
N/√W
Material
Neodymium
Diaphragm
Effective diameter
395
mm
Effective area
SD
1225
cm²
Moving mass
MMS
314
g
Moving mass (without air load)
MMD
284.3
g
Material
Weather protected
Suspensions
Stiffness
KMS
10.42
N/mm
Compliance
CMS
96
µm/N
Equivalent volume to the compliance
VAS
207
L
Mechanical resistance
RMS
4.81
N·s/m
Dimensions
Nominal diameter
18
″
462
mm
Overall diameter
462
mm
Baffle cutout diameter
416
mm
Overall depth
232
mm
Flange thickness
23
mm
Mounting depth
209
mm
Volume occupied by the driver (estimated)
6.5
L
Net weight
10.0
kg
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fS
30 Hz
SD
1225 cm²
30 - 800 Hz
QTS
0.28
xmax
14.0 mm
SPL1W
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Bl/√RE
15
Pmax
3000 W
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RCF LN19S4008 Ω
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fS
32 Hz
SD
1320 cm²
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QTS
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Pmax
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fS
31 Hz
SD
1225 cm²
30 - 800 Hz
QTS
0.29
xmax
14.8 mm
SPL1W
94 dB
Bl/√RE
14
Pmax
3000 W