Oberton 15NMB500
Subwoofer
15″ / 388 mm
Nominal diameter
45 Hz
Resonance
0.29
Q factor
97 dB
Sensitivity
± 7.75 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
97.3
dB
Frequency response
45 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
44.7
Hz
Mechanical quality factor
QMS
12.40
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
7.75
mm
Air volume displaced at xmax
VD
643
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
0.86
mH
VC Diameter
77
mm
Winding height
HVC
21
mm
Winding material
Aluminium
Former material
Kapton
Magnet
Flux density
B
1.2
T
Force factor
Bl
21.34
N/A
Motor constant
Bl/√RE
9.45
N/√W
Air gap height
HAG
11
mm
Material
Neodymium
Diaphragm
Effective diameter
325
mm
Effective area
SD
830
cm²
Moving mass
MMS
95
g
Moving mass (without air load)
MMD
78.1
g
Material
Paper with Glass fiber
Suspensions
Stiffness
KMS
7.52
N/mm
Compliance
CMS
133
µm/N
Equivalent volume to the compliance
VAS
128
L
Mechanical resistance
RMS
2.15
N·s/m
Dimensions
Nominal diameter
15
″
388
mm
Overall diameter
388
mm
Baffle cutout diameter
355
mm
Overall depth
200
mm
Volume occupied by the driver (estimated)
3.5
L
Net weight
5.4
kg
Frame material
Die Cast Aluminium
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13.5″Coaxial
fS
45 Hz
SD
707 cm²
45 - 18000 Hz
QTS
0.28
xmax
6.0 mm
SPL1W
97 dB
Bl/√RE
8.07
Pmax
800 W
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15″Subwoofer
fS
46 Hz
SD
908 cm²
40 - 1500 Hz
QTS
0.29
xmax
8.2 mm
SPL1W
98 dB
Bl/√RE
10
Pmax
1200 W
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