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
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
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
Oberton 15NMB500 SPL
Oberton 15NMB500 Dimensions

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