18″ / 457 mm
Nominal diameter
23 Hz
Resonance
0.28
Q factor
95 dB
Sensitivity
± 4.8 mm
Linear excursion
1600 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.1
dB
Frequency response
40 - 800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
23.0
Hz
Mechanical quality factor
QMS
6.41
Electrical quality factor
QES
0.29
Total quality factor
QTS
0.28
Large signal parameters
Maximum linear excursion
xmax
4.8
mm
Maximum excursion before damage
xlim
16.0
mm
Air volume displaced at xmax
VD
556
cm³
Power handling
P
800
W
Program power
Pmax
1600
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.5
Ω
Inductance (1kHz)
LE
0.61
mH
VC Diameter
102
mm
Magnet
Force factor
Bl
13.4
N/A
Motor constant
Bl/√RE
8.47
N/√W
Air gap height
HAG
9.5
mm
Weight
3.09
kg
Diaphragm
Effective diameter
384
mm
Effective area
SD
1159
cm²
Moving mass
MMS
146
g
Moving mass (without air load)
MMD
118.2
g
Suspensions
Stiffness
KMS
2.94
N/mm
Compliance
CMS
340
µm/N
Equivalent volume to the compliance
VAS
639
L
Mechanical resistance
RMS
3.29
N·s/m
Dimensions
Nominal diameter
18
″
457
mm
Overall diameter
457
mm
Baffle cutout diameter
421
mm
Overall depth
207
mm
Volume occupied by the driver
6.62
L
Net weight
11.43
kg
Frame material
Die-cast aluminum
Similar subwoofers to Eminence OMEGA PRO-18C
18″Subwoofer
fS
25 Hz
SD
1159 cm²
40 - 800 Hz
QTS
0.31
xmax
4.8 mm
SPL1W
95 dB
Bl/√RE
8.24
Pmax
1600 W
15″Woofer
fS
23 Hz
SD
855 cm²
24 - 4000 Hz
QTS
0.27
xmax
5.0 mm
SPL1W
96 dB
Bl/√RE
5.69
Pmax
240 W
15″Woofer
fS
23 Hz
SD
855 cm²
24 - 4000 Hz
QTS
0.27
xmax
5.0 mm
SPL1W
96 dB
Bl/√RE
5.69
Pmax
240 W