Radian 5312
Coaxial
12″ / 308 mm
Nominal diameter
54 Hz
Resonance
0.37
Q factor
94 dB
Sensitivity
± 2.87 mm
Linear excursion
1230 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
94.2
dB
Frequency response
54 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
54.0
Hz
Mechanical quality factor
QMS
2.61
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.37
Large signal parameters
Maximum linear excursion
xmax
2.87
mm
Air volume displaced at xmax
VD
236
cm³
Power handling
P
615
W
Program power
Pmax
1230
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz, estimated)
LE
1.77
mH
VC Diameter
102
mm
Winding material
Aluminum
Magnet
Force factor
Bl
26.8
N/A
Motor constant
Bl/√RE
10.9
N/√W
Material
Ferrite
Diaphragm
Effective diameter
323
mm
Effective area
SD
821
cm²
Moving mass
MMS
149.8
g
Moving mass (without air load)
MMD
137.3
g
Material
Reinforced Paper
Suspensions
Stiffness
KMS
17.24
N/mm
Compliance
CMS
58
µm/N
Equivalent volume to the compliance
VAS
55.4
L
Mechanical resistance
RMS
19.45
N·s/m
Dimensions
Nominal diameter
12
″
308
mm
Overall diameter
308
mm
Baffle cutout diameter
279
mm
Overall depth
202
mm
Volume occupied by the driver (estimated)
5.6
L
Net weight
13.64
kg
Frame material
Cast Aluminum
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fS
50 Hz
SD
531 cm²
50 - 2500 Hz
QTS
0.37
xmax
9.0 mm
SPL1W
94 dB
Bl/√RE
8.15
Pmax
1200 W
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12″Woofer
fS
51 Hz
SD
594 cm²
55 - 2500 Hz
QTS
0.39
xmax
10.5 mm
SPL1W
94 dB
Bl/√RE
9.01
Pmax
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fS
50 Hz
SD
522 cm²
50 - 3000 Hz
QTS
0.37
xmax
8.0 mm
SPL1W
94 dB
Bl/√RE
7.59
Pmax
1400 W