Oberton 18XB1600
Woofer
18″ / 461 mm
Nominal diameter
33 Hz
Resonance
0.28
Q factor
95 dB
Sensitivity
± 12.5 mm
Linear excursion
3200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.1
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
32.5
Hz
Mechanical quality factor
QMS
8.74
Electrical quality factor
QES
0.29
Total quality factor
QTS
0.28
Large signal parameters
Maximum linear excursion
xmax
12.5
mm
Air volume displaced at xmax
VD
1448
cm³
Power handling
P
1600
W
Program power
Pmax
3200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
1.46
mH
VC Diameter
115
mm
Winding height
HVC
32
mm
Winding material
Copper
Former material
Glass fiber
Magnet
Flux density
B
1.1
T
Force factor
Bl
29.6
N/A
Motor constant
Bl/√RE
12.9
N/√W
Air gap height
HAG
14
mm
Material
Ferrite
Diaphragm
Effective diameter
384
mm
Effective area
SD
1158
cm²
Moving mass
MMS
231
g
Moving mass (without air load)
MMD
203
g
Material
Paper with Kevlar and glass fibers
Suspensions
Stiffness
KMS
9.62
N/mm
Compliance
CMS
104
µm/N
Equivalent volume to the compliance
VAS
267
L
Mechanical resistance
RMS
5.4
N·s/m
Dimensions
Nominal diameter
18
″
461
mm
Overall diameter
461
mm
Baffle cutout diameter
417
mm
Overall depth
209
mm
Volume occupied by the driver (estimated)
8.4
L
Net weight
16.8
kg
Frame material
Die cast aluminium
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QSpeakers
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fS
38 Hz
SD
1164 cm²
30 - 800 Hz
QTS
0.27
xmax
8.5 mm
SPL1W
96 dB
Bl/√RE
13
Pmax
2000 W
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RCF LF18X4518 Ω
18″Subwoofer
fS
30 Hz
SD
1200 cm²
30 - 1000 Hz
QTS
0.28
xmax
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SPL1W
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Bl/√RE
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fS
33 Hz
SD
847 cm²
35 - 3150 Hz
QTS
0.28
xmax
9.5 mm
SPL1W
95 dB
Bl/√RE
8.92
Pmax
1000 W