Oberton 6NM150

Mid-range

6.5″ / 170 mm
Nominal diameter
124 Hz
Resonance
0.38
Q factor
95 dB
Sensitivity
± 2.25 mm
Linear excursion
300 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
94.7
dB
Frequency response
200 - 5000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
124
Hz
Mechanical quality factor
QMS
5.96
Electrical quality factor
QES
0.40
Total quality factor
QTS
0.38

Large signal parameters

Maximum linear excursion
xmax
2.25
mm
Air volume displaced at xmax
VD
31
cm³
Power handling
P
150
W
Program power
Pmax
300
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
0.3
mH
VC Diameter
44
mm
Winding height
HVC
8
mm
Winding material
Aluminium
Former material
Kapton

Magnet

Flux density
B
1.42
T
Force factor
Bl
11.58
N/A
Motor constant
Bl/√RE
4.63
N/√W
Air gap height
HAG
7
mm
Material
Neodymium

Diaphragm

Effective diameter
133
mm
Effective area
SD
139
cm²
Moving mass
MMS
11.1
g
Moving mass (without air load)
MMD
9.8
g
Material
Paper

Suspensions

Stiffness
KMS
6.76
N/mm
Compliance
CMS
148
µm/N
Equivalent volume to the compliance
VAS
4
L
Mechanical resistance
RMS
1.45
N·s/m

Dimensions

Nominal diameter
6.5
170
mm
Overall diameter
185
mm
Baffle cutout diameter
145
mm
Overall depth
72
mm
Volume occupied by the driver (estimated)
0.4
L
Net weight
1.05
kg
Frame material
Die cast aluminium
Oberton 6NM150 SPL
Oberton 6NM150 Dimensions

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