Oberton 12B450
Subwoofer
12″ / 315 mm
Nominal diameter
46 Hz
Resonance
0.24
Q factor
96 dB
Sensitivity
± 7.75 mm
Linear excursion
900 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.0
dB
Frequency response
50 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
46.3
Hz
Mechanical quality factor
QMS
9.56
Electrical quality factor
QES
0.24
Total quality factor
QTS
0.24
Large signal parameters
Maximum linear excursion
xmax
7.75
mm
Air volume displaced at xmax
VD
399
cm³
Power handling
P
450
W
Program power
Pmax
900
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
1.1
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
19.31
N/A
Motor constant
Bl/√RE
8.58
N/√W
Air gap height
HAG
11
mm
Material
Ferrite
Diaphragm
Effective diameter
256
mm
Effective area
SD
515
cm²
Moving mass
MMS
61
g
Moving mass (without air load)
MMD
52.5
g
Material
Paper
Suspensions
Stiffness
KMS
5.16
N/mm
Compliance
CMS
194
µm/N
Equivalent volume to the compliance
VAS
71.8
L
Mechanical resistance
RMS
1.85
N·s/m
Dimensions
Nominal diameter
12
″
315
mm
Overall diameter
315
mm
Baffle cutout diameter
280
mm
Overall depth
153
mm
Volume occupied by the driver (estimated)
3.2
L
Net weight
7.5
kg
Frame material
Die cast aluminium
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fS
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SD
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50 - 2500 Hz
QTS
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xmax
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Bl/√RE
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fS
45 Hz
SD
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45 - 3150 Hz
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SD
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45 - 4000 Hz
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