Oberton 18XB1300
Subwoofer
18″ / 461 mm
Nominal diameter
35 Hz
Resonance
0.29
Q factor
96 dB
Sensitivity
± 12 mm
Linear excursion
2600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.6
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.2
Hz
Mechanical quality factor
QMS
9.56
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
12.0
mm
Air volume displaced at xmax
VD
1390
cm³
Power handling
P
1300
W
Program power
Pmax
2600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
1.92
mH
VC Diameter
100
mm
Winding height
HVC
31
mm
Winding material
Copper
Former material
Glass fiber
Magnet
Flux density
B
1.0
T
Force factor
Bl
28.3
N/A
Motor constant
Bl/√RE
12.4
N/√W
Air gap height
HAG
14
mm
Material
Ferrite
Diaphragm
Effective diameter
384
mm
Effective area
SD
1158
cm²
Moving mass
MMS
206.4
g
Moving mass (without air load)
MMD
178.4
g
Material
Carbone paper
Suspensions
Stiffness
KMS
10.07
N/mm
Compliance
CMS
99
µm/N
Equivalent volume to the compliance
VAS
171
L
Mechanical resistance
RMS
4.77
N·s/m
Dimensions
Nominal diameter
18
″
461
mm
Overall diameter
461
mm
Baffle cutout diameter
417
mm
Overall depth
205
mm
Volume occupied by the driver (estimated)
7.0
L
Net weight
12.9
kg
Frame material
Die cast aluminium
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fS
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SD
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35 - 1000 Hz
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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SD
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QTS
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fS
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SD
1164 cm²
30 - 800 Hz
QTS
0.27
xmax
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SPL1W
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Bl/√RE
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