Oberton 18NXB700

Woofer

18″ / 461 mm
Nominal diameter
36 Hz
Resonance
0.31
Q factor
95 dB
Sensitivity
± 9 mm
Linear excursion
2000 W
Program Power
Oberton 18NXB700 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
94.9
dB
Frequency response
36 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
36.2
Hz
Mechanical quality factor
QMS
7.94
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.31

Large signal parameters

Maximum linear excursion
xmax
9.0
mm
Air volume displaced at xmax
VD
999
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
1.97
mH
VC Diameter
100
mm
Winding height
HVC
25
mm
Winding material
Copper
Former material
Glass fiber

Magnet

Flux density
B
1.0
T
Force factor
Bl
27.82
N/A
Motor constant
Bl/√RE
12.2
N/√W
Air gap height
HAG
14
mm
Material
Neodymium

Diaphragm

Effective diameter
376
mm
Effective area
SD
1110
cm²
Moving mass
MMS
213.6
g
Moving mass (without air load)
MMD
186.9
g
Material
Kevlar paper

Suspensions

Stiffness
KMS
11.11
N/mm
Compliance
CMS
90
µm/N
Equivalent volume to the compliance
VAS
155
L
Mechanical resistance
RMS
6.13
N·s/m

Dimensions

Nominal diameter
18
″
461
mm
Overall diameter
461
mm
Baffle cutout diameter
417
mm
Overall depth
223
mm
Volume occupied by the driver (estimated)
5.9
L
Net weight
8.95
kg
Frame material
Die cast aluminium
SPL
Oberton 18NXB700 SPL
Oberton 18NXB700 Dimensions

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