18″ / 460 mm
Nominal diameter
40 Hz
Resonance
0.34
Q factor
95 dB
Sensitivity
± 10 mm
Linear excursion
2000 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.4
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
40.0
Hz
Mechanical quality factor
QMS
7.30
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
10.0
mm
Air volume displaced at xmax
VD
1225
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
1.5
mH
VC Diameter
100
mm
Winding height
HVC
25
mm
Winding material
Copper
Former material
Glass Fibre
Magnet
Flux density
B
1.1
T
Force factor
Bl
25.1
N/A
Motor constant
Bl/√RE
11.1
N/√W
Air gap height
HAG
11
mm
Material
Ferrite
Diaphragm
Effective diameter
395
mm
Effective area
SD
1225
cm²
Moving mass
MMS
199
g
Moving mass (without air load)
MMD
169.4
g
Material
Waterproof
Suspensions
Stiffness
KMS
9.71
N/mm
Compliance
CMS
103
µm/N
Equivalent volume to the compliance
VAS
220
L
Mechanical resistance
RMS
6.85
N·s/m
Spider material
Double Silicone
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
460
mm
Baffle cutout diameter
422
mm
Overall depth
200
mm
Flange thickness
14
mm
Mounting depth
186
mm
Volume occupied by the driver
10.5
L
Net weight
12.3
kg
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QSpeakers
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18″Subwoofer
fS
34 Hz
SD
1225 cm²
30 - 2500 Hz
QTS
0.36
xmax
10.0 mm
SPL1W
95 dB
Bl/√RE
11
Pmax
2600 W
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18″Subwoofer
fS
33 Hz
SD
1131 cm²
35 - 1000 Hz
QTS
0.34
xmax
7.5 mm
SPL1W
95 dB
Bl/√RE
10
Pmax
2000 W
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18″Subwoofer
fS
34 Hz
SD
1210 cm²
35 - 1000 Hz
QTS
0.35
xmax
9.0 mm
SPL1W
95 dB
Bl/√RE
11
Pmax
2400 W