18″ / 470 mm
Nominal diameter
32 Hz
Resonance
0.29
Q factor
93 dB
Sensitivity
± 34 mm
Linear excursion
5000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.0
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
32.2
Hz
Mechanical quality factor
QMS
7.81
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
34.0
mm
Air volume displaced at xmax
VD
4114
cm³
Power handling
P
2500
W
Program power
Pmax
5000
W
Voice Coil
Nominal impedance
Z
2 x 1
Ω
DC resistance (in series)
RE
1.8
Ω
Inductance (1kHz, in series, estimated)
LE
0.98
mH
Magnet
Force factor (in series)
Bl
21.99
N/A
Motor constant
Bl/√RE
16.4
N/√W
Diaphragm
Effective diameter
393
mm
Effective area
SD
1210
cm²
Moving mass
MMS
404
g
Moving mass (without air load)
MMD
374.2
g
Suspensions
Stiffness
KMS
16.53
N/mm
Compliance
CMS
61
µm/N
Equivalent volume to the compliance
VAS
124
L
Mechanical resistance
RMS
10.47
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 SP3 18+ D1
.png.webp)
Fi Car Audio SP3 18+ D22 x 2 Ω
18″Subwoofer
fS
32 Hz
SD
1210 cm²
QTS
0.29
xmax
34.0 mm
SPL1W
93 dB
Bl/√RE
16
Pmax
5000 W
.png.webp)
Fi Car Audio TEAM 3 18 D22 x 2 Ω
18″Subwoofer
fS
32 Hz
SD
1210 cm²
QTS
0.27
xmax
34.0 mm
SPL1W
93 dB
Bl/√RE
17
Pmax
5000 W
.png.webp)
Fi Car Audio TEAM 3 18 D12 x 1 Ω
18″Subwoofer
fS
32 Hz
SD
1210 cm²
QTS
0.27
xmax
34.0 mm
SPL1W
94 dB
Bl/√RE
17
Pmax
5000 W