18″ / 470 mm
Nominal diameter
32 Hz
Resonance
0.43
Q factor
91 dB
Sensitivity
± 33 mm
Linear excursion
9000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.7
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
31.7
Hz
Mechanical quality factor
QMS
9.91
Electrical quality factor
QES
0.45
Total quality factor
QTS
0.43
Large signal parameters
Maximum linear excursion
xmax
33.0
mm
Air volume displaced at xmax
VD
3993
cm³
Power handling
P
4500
W
Program power
Pmax
9000
W
Voice Coil
Nominal impedance
Z
2 x 1
Ω
DC resistance (in series)
RE
1.5
Ω
Inductance (1kHz, in series, estimated)
LE
0.95
mH
Magnet
Force factor (in series)
Bl
19.0
N/A
Motor constant
Bl/√RE
15.5
N/√W
Diaphragm
Effective diameter
393
mm
Effective area
SD
1210
cm²
Moving mass
MMS
516
g
Moving mass (without air load)
MMD
486.2
g
Suspensions
Stiffness
KMS
14.71
N/mm
Compliance
CMS
68
µm/N
Equivalent volume to the compliance
VAS
95.4
L
Mechanical resistance
RMS
10.37
N·s/m
Dimensions
Nominal diameter
18
″
470
mm
Overall diameter
470
mm
Baffle cutout diameter
425
mm
Mounting depth
311
mm
Volume occupied by the driver
7.36
L
Export this driver to a simulation software:
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SpeakerbenchSimilar subwoofers to Fi Car Audio TEAM 4 18 D1
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Fi Car Audio TEAM 4 18 D22 x 2 Ω
18″Subwoofer
fS
32 Hz
SD
1210 cm²
QTS
0.45
xmax
33.0 mm
SPL1W
91 dB
Bl/√RE
15
Pmax
9000 W
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15″Subwoofer
fS
29 Hz
SD
780 cm²
20 - 200 Hz
QTS
0.41
xmax
13.5 mm
SPL1W
90 dB
Bl/√RE
9.7
Pmax
2000 W
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Fi Car Audio SP4 18v2+ D22 x 2 Ω
18″Subwoofer
fS
25 Hz
SD
1210 cm²
QTS
0.37
xmax
33.0 mm
SPL1W
90 dB
Bl/√RE
15
Pmax
7000 W