Oberton 8NMB250VCX

Coaxial

8″ / 210 mm
Nominal diameter
85 Hz
Resonance
0.16
Q factor
99 dB
Sensitivity
± 4.25 mm
Linear excursion
500 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
99.0
dB
Frequency response
85 - 20000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
85.2
Hz
Mechanical quality factor
QMS
7.24
Electrical quality factor
QES
0.17
Total quality factor
QTS
0.16

Large signal parameters

Maximum linear excursion
xmax
4.25
mm
Air volume displaced at xmax
VD
86
cm³
Power handling
P
250
W
Program power
Pmax
500
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
0.07
mH
VC Diameter
62
mm
Winding height
HVC
12
mm
Winding material
Aluminium
Former material
Glass fiber

Magnet

Flux density
B
1.55
T
Force factor
Bl
17.76
N/A
Motor constant
Bl/√RE
7.64
N/√W
Air gap height
HAG
7
mm
Material
Neodymium

Diaphragm

Effective diameter
160
mm
Effective area
SD
202
cm²
Moving mass
MMS
18.3
g
Moving mass (without air load)
MMD
16
g
Material
Paper with carbon fibers

Suspensions

Stiffness
KMS
5.24
N/mm
Compliance
CMS
191
µm/N
Equivalent volume to the compliance
VAS
10.7
L
Mechanical resistance
RMS
1.35
N·s/m

Dimensions

Nominal diameter
8
210
mm
Overall diameter
225
mm
Baffle cutout diameter
187
mm
Overall depth
162
mm
Volume occupied by the driver (estimated)
1.8
L
Net weight
3.88
kg
Frame material
Die Cast Aluminium
Oberton 8NMB250VCX SPL
Oberton 8NMB250VCX Dimensions

Export this driver to a simulation software:

WinISDWinISDBasta!Basta!HornrespHornrespQSpeakersQSpeakersSpeakerSimSpeakerSimMfbLabsMfbLabsSpeakerbenchSpeakerbench

Similar speaker drivers to Oberton 8NMB250VCX

B&C Speaker 8NW51 Mid Bass
8Mid Bass
fS
74 Hz
SD
220 cm²
70 - 3000 Hz
QTS
0.17
xmax
6.0 mm
SPL1W
96 dB
Bl/√RE
8.29
Pmax
400 W
LaVoce MAF082.00 Mid-range
8Mid-range
fS
75 Hz
SD
214 cm²
90 - 5000 Hz
QTS
0.18
xmax
2.6 mm
SPL1W
97 dB
Bl/√RE
7.2
Pmax
400 W
Beyma 8MC500Nd Woofer
8Woofer
fS
69 Hz
SD
220 cm²
80 - 6000 Hz
QTS
0.18
xmax
5.0 mm
SPL1W
96 dB
Bl/√RE
7.25
Pmax
1000 W