12″ / 315 mm
Nominal diameter
51 Hz
Resonance
0.35
Q factor
95 dB
Sensitivity
± 5.25 mm
Linear excursion
700 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.0
dB
Frequency response
60 - 16000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
51.2
Hz
Mechanical quality factor
QMS
6.35
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.35
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
0.6
mH
VC Diameter
77
mm
Winding height
HVC
15
mm
Winding material
Aluminium
Magnet
Flux density
B
1.15
T
Force factor
Bl
17.4
N/A
Motor constant
Bl/√RE
7.32
N/√W
Air gap height
HAG
9
mm
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 with glassfiber
Suspensions
Stiffness
KMS
6.33
N/mm
Compliance
CMS
158
µm/N
Equivalent volume to the compliance
VAS
58.6
L
Mechanical resistance
RMS
3.09
N·s/m
Dimensions
Nominal diameter
12
″
315
mm
Overall diameter
315
mm
Baffle cutout diameter
280
mm
Overall depth
196
mm
Volume occupied by the driver (estimated)
4.8
L
Net weight
10.8
kg
Frame material
Die Cast Aluminium
Similar speaker drivers to Oberton 12CX
12″Coaxial
fS
53 Hz
SD
515 cm²
60 - 16000 Hz
QTS
0.33
xmax
5.3 mm
SPL1W
95 dB
Bl/√RE
7.55
Pmax
700 W
10″Coaxial
fS
50 Hz
SD
346 cm²
55 - 3500 Hz
QTS
0.31
xmax
4.0 mm
SPL1W
95 dB
Bl/√RE
5.1
Pmax
400 W
12″Low frequency
fS
49 Hz
SD
531 cm²
45 - 4000 Hz
QTS
0.29
xmax
4.8 mm
SPL1W
96 dB
Bl/√RE
7.88
Pmax
1400 W