18″ / 457 mm
Nominal diameter
32 Hz
Resonance
0.33
Q factor
97 dB
Sensitivity
± 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
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.8
dB
Frequency response
38 - 700
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
10.66
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Maximum excursion before damage
xlim
18.0
mm
Air volume displaced at xmax
VD
927
cm³
Power handling
P
800
W
Program power
Pmax
1600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.4
Ω
Inductance (1kHz)
LE
1.21
mH
VC Diameter
76
mm
Magnet
Force factor
Bl
19.39
N/A
Motor constant
Bl/√RE
8.35
N/√W
Air gap height
HAG
9.5
mm
Weight
3.402
kg
Diaphragm
Effective diameter
384
mm
Effective area
SD
1159
cm²
Moving mass
MMS
119
g
Moving mass (without air load)
MMD
91.2
g
Suspensions
Stiffness
KMS
4.76
N/mm
Compliance
CMS
210
µm/N
Equivalent volume to the compliance
VAS
392
L
Mechanical resistance
RMS
2.24
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
11.11
kg
Frame material
Die-cast aluminum
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18″Subwoofer
fS
30 Hz
SD
1207 cm²
30 - 2500 Hz
QTS
0.29
xmax
9.3 mm
SPL1W
97 dB
Bl/√RE
9.3
Pmax
1200 W
18″Subwoofer
fS
32 Hz
SD
1140 cm²
32 - 2000 Hz
QTS
0.29
xmax
7.0 mm
SPL1W
97 dB
Bl/√RE
9.04
Pmax
1400 W
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fS
30 Hz
SD
1207 cm²
30 - 3150 Hz
QTS
0.35
xmax
9.3 mm
SPL1W
96 dB
Bl/√RE
8.41
Pmax
1200 W