12″ / 314 mm
Nominal diameter
24 Hz
Resonance
0.33
Q factor
89 dB
Sensitivity
± 7 mm
Linear excursion
240 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
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.2
dB
Frequency response
24 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
24.2
Hz
Mechanical quality factor
QMS
3.54
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
7.0
mm
Air volume displaced at xmax
VD
366
cm³
Power handling
P
120
W
Program power
Pmax
240
W
Voice Coil
Nominal impedance
Z
2 x 8
Ω
DC resistance (in series)
RE
12.4
Ω
Inductance (1kHz, in series)
LE
6.0
mH
VC Diameter
50
mm
Magnet
Force factor (in series)
Bl
23.72
N/A
Motor constant
Bl/√RE
6.74
N/√W
Diaphragm
Effective diameter
258
mm
Effective area
SD
523
cm²
Moving mass
MMS
109.2
g
Moving mass (without air load)
MMD
100.6
g
Suspensions
Stiffness
KMS
2.5
N/mm
Compliance
CMS
400
µm/N
Equivalent volume to the compliance
VAS
152
L
Mechanical resistance
RMS
4.69
N·s/m
Dimensions
Nominal diameter
12
″
314
mm
Overall diameter
314
mm
Baffle cutout diameter
272
mm
Overall depth
130
mm
Volume occupied by the driver (estimated)
2.1
L
Similar subwoofers to Dayton Audio SD315A-88
12″Woofer
fS
23 Hz
SD
499 cm²
25 - 2500 Hz
QTS
0.33
xmax
4.3 mm
SPL1W
89 dB
Bl/√RE
6.25
Pmax
160 W
11″Woofer
fS
23 Hz
SD
366 cm²
23 - 1000 Hz
QTS
0.29
xmax
5.0 mm
SPL1W
90 dB
Bl/√RE
4.95
Pmax
240 W
10″Woofer
fS
23 Hz
SD
350 cm²
QTS
0.36
xmax
6.0 mm
SPL1W
89 dB
Bl/√RE
4.51
Pmax
175 W