Oberton 8M150
Mid-range
8″ / 203 mm
Nominal diameter
68 Hz
Resonance
0.22
Q factor
96 dB
Sensitivity
± 3.25 mm
Linear excursion
300 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.2
dB
Frequency response
80 - 5000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
68.2
Hz
Mechanical quality factor
QMS
6.07
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.22
Large signal parameters
Maximum linear excursion
xmax
3.25
mm
Air volume displaced at xmax
VD
66
cm³
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
0.74
mH
VC Diameter
51
mm
Winding height
HVC
10
mm
Winding material
Aluminium
Former material
Kapton
Magnet
Flux density
B
1.35
T
Force factor
Bl
11.62
N/A
Motor constant
Bl/√RE
5.17
N/√W
Air gap height
HAG
7
mm
Material
Ferrite
Diaphragm
Effective diameter
160
mm
Effective area
SD
202
cm²
Moving mass
MMS
14.1
g
Moving mass (without air load)
MMD
11.8
g
Material
Paper
Suspensions
Stiffness
KMS
2.58
N/mm
Compliance
CMS
387
µm/N
Equivalent volume to the compliance
VAS
21.6
L
Mechanical resistance
RMS
0.99
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
3.25
kg
Frame material
Die cast aluminium
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SpeakerbenchSimilar woofers to Oberton 8M150
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10″Mid-range
fS
65 Hz
SD
317 cm²
80 - 2500 Hz
QTS
0.24
xmax
5.3 mm
SPL1W
95 dB
Bl/√RE
7.86
Pmax
800 W
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10″Mid-range
fS
71 Hz
SD
317 cm²
100 - 4000 Hz
QTS
0.21
xmax
5.3 mm
SPL1W
97 dB
Bl/√RE
8.52
Pmax
800 W
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10″Mid Bass
fS
76 Hz
SD
320 cm²
80 - 4000 Hz
QTS
0.21
xmax
1.5 mm
SPL1W
97 dB
Bl/√RE
8.14
Pmax
700 W