Oberton 18B450

Woofer

18″ / 461 mm
Nominal diameter
34 Hz
Resonance
0.34
Q factor
96 dB
Sensitivity
± 7.25 mm
Linear excursion
1000 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
95.6
dB
Frequency response
35 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
34.4
Hz
Mechanical quality factor
QMS
8.03
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.34

Large signal parameters

Maximum linear excursion
xmax
7.25
mm
Air volume displaced at xmax
VD
805
cm³
Power handling
P
500
W
Program power
Pmax
1000
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
1.49
mH
VC Diameter
77
mm
Winding height
HVC
20
mm
Winding material
Copper
Former material
Glass fiber

Magnet

Flux density
B
1.2
T
Force factor
Bl
22.12
N/A
Motor constant
Bl/√RE
9.62
N/√W
Air gap height
HAG
11
mm
Material
Ferrite

Diaphragm

Effective diameter
376
mm
Effective area
SD
1110
cm²
Moving mass
MMS
152.8
g
Moving mass (without air load)
MMD
126
g
Material
Paper

Suspensions

Stiffness
KMS
7.14
N/mm
Compliance
CMS
140
µm/N
Equivalent volume to the compliance
VAS
242
L
Mechanical resistance
RMS
4.11
N·s/m

Dimensions

Nominal diameter
18
461
mm
Overall diameter
461
mm
Baffle cutout diameter
417
mm
Overall depth
193
mm
Volume occupied by the driver (estimated)
5.2
L
Net weight
8.55
kg
Frame material
Die cast aluminium
Oberton 18B450 SPL
Oberton 18B450 Dimensions

Export this driver to a simulation software:

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