12″ / 306 mm
Nominal diameter
24 Hz
Resonance
0.4
Q factor
87 dB
Sensitivity
± 9.3 mm
Linear excursion
500 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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Parts Express
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.8
dB
Frequency response
23 - 200
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
24.2
Hz
Mechanical quality factor
QMS
5.07
Electrical quality factor
QES
0.43
Total quality factor
QTS
0.40
Large signal parameters
Maximum linear excursion
xmax
9.3
mm
Air volume displaced at xmax
VD
464
cm³
Power handling
P
250
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
2.06
mH
VC Diameter
66
mm
Former material
Kapton® / Polyimide
Magnet
Force factor
Bl
13.7
N/A
Motor constant
Bl/√RE
7.54
N/√W
Diaphragm
Effective diameter
252
mm
Effective area
SD
499
cm²
Moving mass
MMS
160
g
Moving mass (without air load)
MMD
152
g
Suspensions
Stiffness
KMS
3.7
N/mm
Compliance
CMS
270
µm/N
Equivalent volume to the compliance
VAS
92.3
L
Mechanical resistance
RMS
4.8
N·s/m
Dimensions
Nominal diameter
12
″
306
mm
Overall diameter
306
mm
Baffle cutout diameter
275
mm
Overall depth
153
mm
Volume occupied by the driver (estimated)
2.6
L
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10″Woofer
fS
25 Hz
SD
343 cm²
25 - 2500 Hz
QTS
0.38
xmax
4.5 mm
SPL1W
87 dB
Bl/√RE
4.92
Pmax
140 W
12″Subwoofer
fS
26 Hz
SD
448 cm²
10 - 900 Hz
QTS
0.47
xmax
9.5 mm
SPL1W
86 dB
Bl/√RE
6.29
Pmax
1200 W
15″Subwoofer
fS
27 Hz
SD
810 cm²
QTS
0.46
xmax
33.0 mm
SPL1W
87 dB
Bl/√RE
12
Pmax
7000 W