12″ / 300 mm
Nominal diameter
47 Hz
Resonance
0.51
Q factor
93 dB
Sensitivity
± 5.07 mm
Linear excursion
500 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.4
dB
Frequency response
50 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
47.0
Hz
Mechanical quality factor
QMS
15.50
Electrical quality factor
QES
0.53
Total quality factor
QTS
0.51
Large signal parameters
Maximum linear excursion
xmax
5.07
mm
Maximum excursion before damage
xlim
16.7
mm
Air volume displaced at xmax
VD
275
cm³
Power handling
P
250
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.1
Ω
Inductance (1kHz)
LE
0.8
mH
VC Diameter
52
mm
Winding height
HVC
12.8
mm
Winding material
Copper
Former material
Glass Fiber
Magnet
Flux density
B
1.1
T
Force factor
Bl
12.5
N/A
Motor constant
Bl/√RE
5.54
N/√W
Air gap height
HAG
8
mm
Material
Ferrite Ring
Diaphragm
Effective diameter
263
mm
Effective area
SD
543
cm²
Moving mass
MMS
56.4
g
Moving mass (without air load)
MMD
47.5
g
Suspensions
Stiffness
KMS
5.0
N/mm
Compliance
CMS
200
µm/N
Equivalent volume to the compliance
VAS
83.7
L
Mechanical resistance
RMS
1.1
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
311
mm
Baffle cutout diameter
284
mm
Overall depth
133
mm
Flange thickness
8
mm
Mounting depth
125
mm
Volume occupied by the driver
2.0
L
Net weight
3.5
kg
Frame material
Steel
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QSpeakers
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15″Low frequency
fS
44 Hz
SD
855 cm²
40 - 1000 Hz
QTS
0.47
xmax
7.0 mm
SPL1W
93 dB
Bl/√RE
9.14
Pmax
2000 W
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12″Subwoofer
fS
45 Hz
SD
539 cm²
45 - 5000 Hz
QTS
0.52
xmax
7.3 mm
SPL1W
94 dB
Bl/√RE
5.15
Pmax
600 W
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12″Bass Guitar Speaker
fS
48 Hz
SD
520 cm²
49 - 4500 Hz
QTS
0.48
xmax
5.2 mm
SPL1W
95 dB
Bl/√RE
5.18
Pmax
300 W