Oberton 12NCX
Coaxial
12″ / 315 mm
Nominal diameter
58 Hz
Resonance
0.3
Q factor
98 dB
Sensitivity
± 5.25 mm
Linear excursion
700 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
98.0
dB
Frequency response
60 - 16000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
58.2
Hz
Mechanical quality factor
QMS
6.18
Electrical quality factor
QES
0.31
Total quality factor
QTS
0.30
Large signal parameters
Maximum linear excursion
xmax
5.25
mm
Air volume displaced at xmax
VD
270
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
0.58
mH
VC Diameter
77
mm
Winding height
HVC
15
mm
Winding material
Aluminium
Former material
Kapton
Magnet
Flux density
B
1.1
T
Force factor
Bl
17.19
N/A
Motor constant
Bl/√RE
7.2
N/√W
Air gap height
HAG
9
mm
Material
Neodymium
Diaphragm
Effective diameter
256
mm
Effective area
SD
515
cm²
Moving mass
MMS
43.9
g
Moving mass (without air load)
MMD
35.5
g
Material
Paper with glassfiber
Suspensions
Stiffness
KMS
5.88
N/mm
Compliance
CMS
170
µm/N
Equivalent volume to the compliance
VAS
62.9
L
Mechanical resistance
RMS
2.6
N·s/m
Dimensions
Nominal diameter
12
″
315
mm
Overall diameter
315
mm
Baffle cutout diameter
280
mm
Overall depth
191
mm
Volume occupied by the driver (estimated)
3.0
L
Net weight
5.4
kg
Frame material
Die Cast Aluminium
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12″Coaxial
fS
58 Hz
SD
531 cm²
60 - 4000 Hz
QTS
0.29
xmax
5.5 mm
SPL1W
98 dB
Bl/√RE
7.53
Pmax
800 W
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12″Coaxial
fS
58 Hz
SD
531 cm²
60 - 5000 Hz
QTS
0.29
xmax
5.5 mm
SPL1W
98 dB
Bl/√RE
7.53
Pmax
800 W
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12″Low frequency
fS
55 Hz
SD
552 cm²
55 - 5000 Hz
QTS
0.27
xmax
4.8 mm
SPL1W
99 dB
Bl/√RE
8.08
Pmax
900 W