Oberton 18XB1500
Woofer
18″ / 461 mm
Nominal diameter
36 Hz
Resonance
0.23
Q factor
96 dB
Sensitivity
± 11 mm
Linear excursion
3000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.3
dB
Frequency response
30 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
35.8
Hz
Mechanical quality factor
QMS
10.52
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.23
Large signal parameters
Maximum linear excursion
xmax
11.0
mm
Air volume displaced at xmax
VD
1274
cm³
Power handling
P
1500
W
Program power
Pmax
3000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
1.53
mH
VC Diameter
115
mm
Winding height
HVC
29
mm
Winding material
Copper
Former material
Glass fiber
Magnet
Flux density
B
1.1
T
Force factor
Bl
31.58
N/A
Motor constant
Bl/√RE
13.7
N/√W
Air gap height
HAG
14
mm
Material
Ferrite
Diaphragm
Effective diameter
384
mm
Effective area
SD
1158
cm²
Moving mass
MMS
212
g
Moving mass (without air load)
MMD
184
g
Material
Paper with carbon fibers
Suspensions
Stiffness
KMS
8.93
N/mm
Compliance
CMS
112
µm/N
Equivalent volume to the compliance
VAS
193
L
Mechanical resistance
RMS
4.53
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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SpeakerbenchSimilar subwoofers to Oberton 18XB1500
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fS
33 Hz
SD
1164 cm²
35 - 2000 Hz
QTS
0.24
xmax
11.1 mm
SPL1W
96 dB
Bl/√RE
14
Pmax
1600 W
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18″Subwoofer
fS
32 Hz
SD
1222 cm²
32 - 2500 Hz
QTS
0.21
xmax
14.0 mm
SPL1W
96 dB
Bl/√RE
14
Pmax
3600 W
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15″Subwoofer
fS
35 Hz
SD
850 cm²
40 - 4100 Hz
QTS
0.24
xmax
7.5 mm
SPL1W
97 dB
Bl/√RE
10
Pmax
800 W