15″ / 397 mm
Nominal diameter
35 Hz
Resonance
0.34
Q factor
91 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
91.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
34.8
Hz
Mechanical quality factor
QMS
7.81
Electrical quality factor
QES
0.36
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
20.0
mm
Air volume displaced at xmax
VD
1620
cm³
Power handling
P
1750
W
Program power
Pmax
3500
W
Voice Coil
Nominal impedance
Z
2 x 2
Ω
DC resistance (in series)
RE
2.8
Ω
Inductance (1kHz, in series, estimated)
LE
1.18
mH
Magnet
Force factor (in series)
Bl
21.9
N/A
Motor constant
Bl/√RE
13.1
N/√W
Diaphragm
Effective diameter
321
mm
Effective area
SD
810
cm²
Moving mass
MMS
269
g
Moving mass (without air load)
MMD
252.2
g
Suspensions
Stiffness
KMS
13.51
N/mm
Compliance
CMS
74
µm/N
Equivalent volume to the compliance
VAS
68.1
L
Mechanical resistance
RMS
7.53
N·s/m
Dimensions
Nominal diameter
15
″
397
mm
Overall diameter
397
mm
Baffle cutout diameter
359
mm
Mounting depth
210
mm
Volume occupied by the driver
5.95
L
Similar subwoofers to Fi Car Audio BL15v3.1 D2
15″Subwoofer
fS
35 Hz
SD
810 cm²
QTS
0.34
xmax
20.0 mm
SPL1W
91 dB
Bl/√RE
13
Pmax
3500 W
15″Subwoofer
fS
34 Hz
SD
810 cm²
QTS
0.29
xmax
24.0 mm
SPL1W
91 dB
Bl/√RE
15
Pmax
3500 W
18″Subwoofer
fS
38 Hz
SD
1210 cm²
QTS
0.28
xmax
34.0 mm
SPL1W
93 dB
Bl/√RE
20
Pmax
9000 W