12″ / 318 mm
Nominal diameter
28 Hz
Resonance
0.29
Q factor
85 dB
Sensitivity
± 33 mm
Linear excursion
7000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.0
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
27.9
Hz
Mechanical quality factor
QMS
7.96
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
33.0
mm
Air volume displaced at xmax
VD
1584
cm³
Power handling
P
3500
W
Program power
Pmax
7000
W
Voice Coil
Nominal impedance
Z
2 x 1
Ω
DC resistance (in series)
RE
1.3
Ω
Inductance (1kHz, in series, estimated)
LE
0.69
mH
Magnet
Force factor (in series)
Bl
17.18
N/A
Motor constant
Bl/√RE
15.1
N/√W
Diaphragm
Effective diameter
247
mm
Effective area
SD
480
cm²
Moving mass
MMS
390
g
Moving mass (without air load)
MMD
382.1
g
Suspensions
Stiffness
KMS
11.63
N/mm
Compliance
CMS
86
µm/N
Equivalent volume to the compliance
VAS
27.1
L
Mechanical resistance
RMS
8.59
N·s/m
Dimensions
Nominal diameter
12
″
318
mm
Overall diameter
318
mm
Baffle cutout diameter
283
mm
Mounting depth
254
mm
Volume occupied by the driver
5.38
L
Export this driver to a simulation software:
WinISD
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QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to Fi Car Audio SP4 12v2+ D1
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Fi Car Audio SP4 12v2+ D22 x 2 Ω
12″Subwoofer
fS
28 Hz
SD
480 cm²
QTS
0.29
xmax
33.0 mm
SPL1W
85 dB
Bl/√RE
15
Pmax
7000 W
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