Oberton 18NSW700

Woofer

18″ / 461 mm
Nominal diameter
30 Hz
Resonance
0.24
Q factor
98 dB
Sensitivity
± 13 mm
Linear excursion
1400 W
Program Power
Oberton 18NSW700 Woofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
97.7
dB
Frequency response
30 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
30.5
Hz
Mechanical quality factor
QMS
9.24
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.24

Large signal parameters

Maximum linear excursion
xmax
13.0
mm
Air volume displaced at xmax
VD
1505
cm³
Power handling
P
700
W
Program power
Pmax
1400
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.1
Ω
Inductance (1kHz)
LE
0.96
mH
VC Diameter
77
mm
Winding height
HVC
34
mm
Former material
Glass fiber

Magnet

Flux density
B
1.35
T
Force factor
Bl
26.65
N/A
Motor constant
Bl/√RE
10.8
N/√W
Air gap height
HAG
16
mm
Material
Neodymium

Diaphragm

Effective diameter
384
mm
Effective area
SD
1158
cm²
Moving mass
MMS
151.9
g
Moving mass (without air load)
MMD
124
g
Material
Paper with Carbone fibers

Suspensions

Stiffness
KMS
5.57
N/mm
Compliance
CMS
180
µm/N
Equivalent volume to the compliance
VAS
309
L
Mechanical resistance
RMS
3.15
N·s/m

Dimensions

Nominal diameter
18
″
461
mm
Overall diameter
461
mm
Baffle cutout diameter
417
mm
Overall depth
225
mm
Volume occupied by the driver (estimated)
6.5
L
Net weight
10.3
kg
Frame material
Die cast aluminium
SPL
Oberton 18NSW700 SPL
Oberton 18NSW700 Dimensions

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