Oberton 18B500

Woofer

18″ / 461 mm
Nominal diameter
35 Hz
Resonance
0.28
Q factor
97 dB
Sensitivity
± 8.75 mm
Linear excursion
1200 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
96.8
dB
Frequency response
35 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
34.9
Hz
Mechanical quality factor
QMS
9.24
Electrical quality factor
QES
0.28
Total quality factor
QTS
0.28

Large signal parameters

Maximum linear excursion
xmax
8.75
mm
Air volume displaced at xmax
VD
971
cm³
Power handling
P
600
W
Program power
Pmax
1200
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
1.37
mH
VC Diameter
77
mm
Winding height
HVC
23
mm
Winding material
Copper
Former material
Glass fiber

Magnet

Flux density
B
1.27
T
Force factor
Bl
24.06
N/A
Motor constant
Bl/√RE
10.7
N/√W
Air gap height
HAG
11
mm
Material
Ferrite

Diaphragm

Effective diameter
376
mm
Effective area
SD
1110
cm²
Moving mass
MMS
146.8
g
Moving mass (without air load)
MMD
120.1
g
Material
Paper

Suspensions

Stiffness
KMS
7.04
N/mm
Compliance
CMS
142
µm/N
Equivalent volume to the compliance
VAS
244
L
Mechanical resistance
RMS
3.48
N·s/m

Dimensions

Nominal diameter
18
461
mm
Overall diameter
461
mm
Baffle cutout diameter
417
mm
Overall depth
202
mm
Volume occupied by the driver (estimated)
6.8
L
Net weight
12.3
kg
Frame material
Die cast aluminium
Oberton 18B500 SPL
Oberton 18B500 Dimensions

Export this driver to a simulation software:

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