10″ / 279 mm
Nominal diameter
40 Hz
Resonance
0.48
Q factor
84 dB
Sensitivity
± 17 mm
Linear excursion
1500 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
84.4
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
39.9
Hz
Mechanical quality factor
QMS
6.93
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.48
Large signal parameters
Maximum linear excursion
xmax
17.0
mm
Air volume displaced at xmax
VD
527
cm³
Power handling
P
750
W
Program power
Pmax
1500
W
Voice Coil
Nominal impedance
Z
2
Ω
DC resistance
RE
1.8
Ω
Inductance (1kHz, estimated)
LE
0.56
mH
Magnet
Force factor
Bl
11.9
N/A
Motor constant
Bl/√RE
8.87
N/√W
Diaphragm
Effective diameter
199
mm
Effective area
SD
310
cm²
Moving mass
MMS
163
g
Moving mass (without air load)
MMD
158.7
g
Suspensions
Stiffness
KMS
10.95
N/mm
Compliance
CMS
91
µm/N
Equivalent volume to the compliance
VAS
12.4
L
Mechanical resistance
RMS
5.9
N·s/m
Dimensions
Nominal diameter
10
″
279
mm
Overall diameter
279
mm
Baffle cutout diameter
235
mm
Mounting depth
165
mm
Volume occupied by the driver
3.96
L
Similar subwoofers to Fi Car Audio Alpha v2.1 10 S2
10″Subwoofer
fS
40 Hz
SD
310 cm²
QTS
0.49
xmax
17.0 mm
SPL1W
85 dB
Bl/√RE
8.89
Pmax
1500 W
10″Subwoofer
fS
45 Hz
SD
330 cm²
40 - 600 Hz
QTS
0.38
xmax
11.0 mm
SPL1W
84 dB
Bl/√RE
7.47
Pmax
800 W
8″Shallow subwoofer
fS
43 Hz
SD
222 cm²
QTS
0.51
xmax
6.0 mm
SPL1W
84 dB
Bl/√RE
6.27
Pmax
600 W