Fi Car Audio BL12v3.1 D1

2x1Ω
2x2Ω

Subwoofer

12″ / 318 mm
Nominal diameter
37 Hz
Resonance
0.3
Q factor
88 dB
Sensitivity
± 20 mm
Linear excursion
3500 W
Program Power
Fi Car Audio BL12v3.1 D1 SubwooferFi Car Audio BL12v3.1 D1 SubwooferFi Car Audio BL12v3.1 D1 Subwoofer
Excursion
Velocity
SPL
Phase
Group delay
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
Discard
Apply
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
0.53
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
Impedance
Step response
Tone Burst

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