Oberton 12B400
Mid Bass
12″ / 310 mm
Nominal diameter
50 Hz
Resonance
0.25
Q factor
97 dB
Sensitivity
± 5.25 mm
Linear excursion
800 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
97.1
dB
Frequency response
50 - 2500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
50.5
Hz
Mechanical quality factor
QMS
9.69
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.25
Large signal parameters
Maximum linear excursion
xmax
5.25
mm
Air volume displaced at xmax
VD
270
cm³
Power handling
P
400
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
0.81
mH
VC Diameter
77
mm
Winding height
HVC
15
mm
Winding material
Aluminium
Former material
Kapton
Magnet
Flux density
B
1.33
T
Force factor
Bl
18.4
N/A
Motor constant
Bl/√RE
7.81
N/√W
Air gap height
HAG
9
mm
Material
Ferrite
Diaphragm
Effective diameter
256
mm
Effective area
SD
515
cm²
Moving mass
MMS
49.2
g
Moving mass (without air load)
MMD
40.8
g
Material
Paper
Suspensions
Stiffness
KMS
4.95
N/mm
Compliance
CMS
202
µm/N
Equivalent volume to the compliance
VAS
74.7
L
Mechanical resistance
RMS
1.61
N·s/m
Dimensions
Nominal diameter
12
″
310
mm
Overall diameter
311
mm
Baffle cutout diameter
280
mm
Overall depth
145
mm
Volume occupied by the driver (estimated)
3.0
L
Net weight
7.25
kg
Frame material
Die cast aluminium
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SpeakerbenchSimilar subwoofers to Oberton 12B400
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12″Subwoofer
fS
48 Hz
SD
531 cm²
45 - 5000 Hz
QTS
0.23
xmax
5.5 mm
SPL1W
98 dB
Bl/√RE
7.76
Pmax
800 W
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12″Coaxial
fS
50 Hz
SD
515 cm²
60 - 18000 Hz
QTS
0.25
xmax
4.5 mm
SPL1W
98 dB
Bl/√RE
7.81
Pmax
800 W