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
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
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
Oberton 12B450 SPL
Oberton 12B450 Dimensions

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