Oberton 12B45V

Subwoofer

12″ / 310 mm
Nominal diameter
48 Hz
Resonance
0.35
Q factor
94 dB
Sensitivity
± 10.5 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
93.9
dB
Frequency response
40 - 2000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
47.9
Hz
Mechanical quality factor
QMS
7.37
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.35

Large signal parameters

Maximum linear excursion
xmax
10.5
mm
Air volume displaced at xmax
VD
540
cm³
Power handling
P
450
W
Program power
Pmax
900
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
4.9
Ω
Inductance (1kHz)
LE
0.73
mH
VC Diameter
77
mm
Winding height
HVC
25
mm
Winding material
Aluminium
Former material
Glass fiber

Magnet

Flux density
B
1.24
T
Force factor
Bl
16.65
N/A
Motor constant
Bl/√RE
7.52
N/√W
Air gap height
HAG
8
mm
Material
Ferrite

Diaphragm

Effective diameter
256
mm
Effective area
SD
515
cm²
Moving mass
MMS
69.9
g
Moving mass (without air load)
MMD
61.4
g
Material
Paper with Kevlar fibers

Suspensions

Stiffness
KMS
6.32
N/mm
Compliance
CMS
158
µm/N
Equivalent volume to the compliance
VAS
58.5
L
Mechanical resistance
RMS
2.85
N·s/m

Dimensions

Nominal diameter
12
310
mm
Overall diameter
315
mm
Baffle cutout diameter
280
mm
Overall depth
158
mm
Volume occupied by the driver (estimated)
3.3
L
Net weight
7.65
kg
Frame material
Die cast aluminium
Oberton 12B45V SPL
Oberton 12B45V Dimensions

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