Oberton 8CX

Coaxial

8″ / 210 mm
Nominal diameter
76 Hz
Resonance
0.4
Q factor
94 dB
Sensitivity
± 5.25 mm
Linear excursion
400 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
93.8
dB
Frequency response
70 - 20000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
76.1
Hz
Mechanical quality factor
QMS
4.28
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.40

Large signal parameters

Maximum linear excursion
xmax
5.25
mm
Air volume displaced at xmax
VD
106
cm³
Power handling
P
200
W
Program power
Pmax
400
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
0.64
mH
VC Diameter
51
mm
Winding height
HVC
14
mm
Winding material
Aluminium
Former material
Kapton

Magnet

Flux density
B
0.91
T
Force factor
Bl
9.43
N/A
Motor constant
Bl/√RE
3.96
N/√W
Air gap height
HAG
7
mm
Material
Ferrite

Diaphragm

Effective diameter
160
mm
Effective area
SD
202
cm²
Moving mass
MMS
14.5
g
Moving mass (without air load)
MMD
12.2
g
Material
Paper with carbon fibers

Suspensions

Stiffness
KMS
3.32
N/mm
Compliance
CMS
301
µm/N
Equivalent volume to the compliance
VAS
16.8
L
Mechanical resistance
RMS
1.62
N·s/m

Dimensions

Nominal diameter
8
210
mm
Overall diameter
225
mm
Baffle cutout diameter
187
mm
Overall depth
121
mm
Volume occupied by the driver (estimated)
1.6
L
Net weight
4.5
kg
Frame material
Die Cast Aluminium
Oberton 8CX SPL
Oberton 8CX Dimensions

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