Fi Car Audio BTL3 12 D2

2x1Ω
2x2Ω

Subwoofer

12″ / 318 mm
Nominal diameter
34 Hz
Resonance
0.26
Q factor
87 dB
Sensitivity
± 34 mm
Linear excursion
5000 W
Program Power
Fi Car Audio BTL3 12 D2 SubwooferFi Car Audio BTL3 12 D2 SubwooferFi Car Audio BTL3 12 D2 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
87.4
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
33.9
Hz
Mechanical quality factor
QMS
6.11
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.26

Large signal parameters

Maximum linear excursion
xmax
34.0
mm
Air volume displaced at xmax
VD
1632
cm³
Power handling
P
2500
W
Program power
Pmax
5000
W

Voice Coil

Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
3.6
Ω
Inductance (1kHz, in series, estimated)
LE
1.57
mH

Magnet

Force factor (in series)
Bl
28.2
N/A
Motor constant
Bl/√RE
14.9
N/√W

Diaphragm

Effective diameter
247
mm
Effective area
SD
480
cm²
Moving mass
MMS
282
g
Moving mass (without air load)
MMD
274.1
g

Suspensions

Stiffness
KMS
12.03
N/mm
Compliance
CMS
83
µm/N
Equivalent volume to the compliance
VAS
24.8
L
Mechanical resistance
RMS
9.83
N·s/m

Dimensions

Nominal diameter
12
″
318
mm
Overall diameter
318
mm
Baffle cutout diameter
283
mm
Mounting depth
184
mm
Volume occupied by the driver
2.27
L
Impedance
Step response
Tone Burst

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