12″ / 318 mm
Nominal diameter
37 Hz
Resonance
0.3
Q factor
88 dB
Sensitivity
± 20 mm
Linear excursion
3500 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.4
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
36.6
Hz
Mechanical quality factor
QMS
7.46
Electrical quality factor
QES
0.33
Total quality factor
QTS
0.30
Large signal parameters
Maximum linear excursion
xmax
20.0
mm
Air volume displaced at xmax
VD
960
cm³
Power handling
P
1750
W
Program power
Pmax
3500
W
Voice Coil
Nominal impedance
Z
2 x 1
Ω
DC resistance (in series)
RE
1.4
Ω
Inductance (1kHz, in series, estimated)
LE
1.46
mH
Magnet
Force factor (in series)
Bl
15.5
N/A
Motor constant
Bl/√RE
13.1
N/√W
Diaphragm
Effective diameter
247
mm
Effective area
SD
480
cm²
Moving mass
MMS
225
g
Moving mass (without air load)
MMD
217.1
g
Suspensions
Stiffness
KMS
11.95
N/mm
Compliance
CMS
84
µm/N
Equivalent volume to the compliance
VAS
27
L
Mechanical resistance
RMS
6.94
N·s/m
Dimensions
Nominal diameter
12
″
318
mm
Overall diameter
318
mm
Baffle cutout diameter
283
mm
Mounting depth
171
mm
Volume occupied by the driver
5.1
L
Similar subwoofers to Fi Car Audio BL12v3.1 D1
10″Woofer
fS
31 Hz
SD
346 cm²
30 - 300 Hz
QTS
0.26
xmax
9.0 mm
SPL1W
88 dB
Bl/√RE
9.26
Pmax
500 W
12″Subwoofer
fS
34 Hz
SD
480 cm²
QTS
0.31
xmax
34.0 mm
SPL1W
87 dB
Bl/√RE
14
Pmax
5000 W
12″Subwoofer
fS
37 Hz
SD
480 cm²
QTS
0.30
xmax
20.0 mm
SPL1W
88 dB
Bl/√RE
13
Pmax
3500 W