Oberton 15NB500
Woofer
15″ / 388 mm
Nominal diameter
43 Hz
Resonance
0.26
Q factor
97 dB
Sensitivity
± 7.25 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.9
dB
Frequency response
42 - 2500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
42.8
Hz
Mechanical quality factor
QMS
11.97
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.26
Large signal parameters
Maximum linear excursion
xmax
7.25
mm
Air volume displaced at xmax
VD
602
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
1.14
mH
VC Diameter
77
mm
Winding height
HVC
20
mm
Winding material
Copper
Former material
Glass fiber
Magnet
Flux density
B
1.2
T
Force factor
Bl
24.31
N/A
Motor constant
Bl/√RE
10.6
N/√W
Air gap height
HAG
11
mm
Material
Neodymium
Diaphragm
Effective diameter
325
mm
Effective area
SD
830
cm²
Moving mass
MMS
109.6
g
Moving mass (without air load)
MMD
92.7
g
Material
Paper with Glass fiber
Suspensions
Stiffness
KMS
7.94
N/mm
Compliance
CMS
126
µm/N
Equivalent volume to the compliance
VAS
121
L
Mechanical resistance
RMS
2.46
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
44 Hz
SD
707 cm²
45 - 18000 Hz
QTS
0.25
xmax
8.5 mm
SPL1W
97 dB
Bl/√RE
9.28
Pmax
1000 W
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15″Woofer
fS
44 Hz
SD
881 cm²
40 - 2000 Hz
QTS
0.24
xmax
6.6 mm
SPL1W
98 dB
Bl/√RE
11
Pmax
1200 W
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