12″ / 305 mm
Nominal diameter
32 Hz
Resonance
0.52
Q factor
87 dB
Sensitivity
± 8 mm
Linear excursion
700 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
87.0
dB
Frequency response
22 - 900
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
32.0
Hz
Mechanical quality factor
QMS
3.64
Electrical quality factor
QES
0.61
Total quality factor
QTS
0.52
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
347
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
1.15
mH
VC Diameter
51
mm
Winding height
HVC
24
mm
Magnet
Flux density
B
0.66
T
Force factor
Bl
10.5
N/A
Motor constant
Bl/√RE
5.87
N/√W
Air gap height
HAG
8
mm
Material
High grade ferrite
Diaphragm
Effective diameter
235
mm
Effective area
SD
434
cm²
Moving mass
MMS
105
g
Moving mass (without air load)
MMD
98.2
g
Suspensions
Stiffness
KMS
4.35
N/mm
Compliance
CMS
230
µm/N
Equivalent volume to the compliance
VAS
60
L
Mechanical resistance
RMS
5.85
N·s/m
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
305
mm
Baffle cutout diameter
270
mm
Mounting depth
140
mm
Volume occupied by the driver
2.6
L
Net weight
4.7
kg
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fS
31 Hz
SD
511 cm²
31 - 500 Hz
QTS
0.50
xmax
9.5 mm
SPL1W
87 dB
Bl/√RE
7.19
Pmax
600 W
12″Subwoofer
fS
33 Hz
SD
552 cm²
33 - 450 Hz
QTS
0.57
xmax
8.5 mm
SPL1W
87 dB
Bl/√RE
7.57
Pmax
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12″Subwoofer
fS
32 Hz
SD
511 cm²
31 - 500 Hz
QTS
0.49
xmax
9.0 mm
SPL1W
88 dB
Bl/√RE
7.38
Pmax
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