Oberton 8MB201
Mid-range
8″ / 203 mm
Nominal diameter
68 Hz
Resonance
0.31
Q factor
93 dB
Sensitivity
± 7 mm
Linear excursion
400 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.0
dB
Frequency response
65 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
67.7
Hz
Mechanical quality factor
QMS
6.24
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.31
Large signal parameters
Maximum linear excursion
xmax
7.0
mm
Air volume displaced at xmax
VD
140
cm³
Power handling
P
200
W
Program power
Pmax
400
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.8
Ω
Inductance (1kHz)
LE
0.8
mH
VC Diameter
51
mm
Winding height
HVC
17.5
mm
Winding material
Aluminium
Former material
Kapton
Magnet
Flux density
B
1.35
T
Force factor
Bl
12.54
N/A
Motor constant
Bl/√RE
5.21
N/√W
Air gap height
HAG
7
mm
Material
Ferrite
Diaphragm
Effective diameter
160
mm
Effective area
SD
200
cm²
Moving mass
MMS
21
g
Moving mass (without air load)
MMD
18.7
g
Material
Paper with glassfiber
Suspensions
Stiffness
KMS
3.79
N/mm
Compliance
CMS
264
µm/N
Equivalent volume to the compliance
VAS
14.7
L
Mechanical resistance
RMS
1.43
N·s/m
Dimensions
Nominal diameter
8
″
203
mm
Overall diameter
225
mm
Baffle cutout diameter
187
mm
Overall depth
90
mm
Volume occupied by the driver (estimated)
1.1
L
Net weight
3.22
kg
Frame material
Die cast aluminium
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SpeakerbenchSimilar woofers to Oberton 8MB201
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8″Coaxial
fS
68 Hz
SD
220 cm²
70 - 18000 Hz
QTS
0.27
xmax
6.0 mm
SPL1W
94 dB
Bl/√RE
5.69
Pmax
500 W
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8″Mid Bass
fS
68 Hz
SD
220 cm²
70 - 4000 Hz
QTS
0.27
xmax
6.0 mm
SPL1W
94 dB
Bl/√RE
5.63
Pmax
400 W