12″ / 300 mm
Nominal diameter
26 Hz
Resonance
0.53
Q factor
84 dB
Sensitivity
± 15.2 mm
Linear excursion
800 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
84.0
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
26.5
Hz
Mechanical quality factor
QMS
10.77
Electrical quality factor
QES
0.56
Total quality factor
QTS
0.53
Large signal parameters
Maximum linear excursion
xmax
15.2
mm
Air volume displaced at xmax
VD
819
cm³
Power handling
P
400
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
9.3
Ω
Inductance (1kHz, in series, estimated)
LE
4.26
mH
Magnet
Force factor (in series)
Bl
29.1
N/A
Motor constant
Bl/√RE
9.55
N/√W
Diameter
156
mm
Diaphragm
Effective diameter
262
mm
Effective area
SD
539
cm²
Moving mass
MMS
306.6
g
Moving mass (without air load)
MMD
297.6
g
Suspensions
Stiffness
KMS
8.48
N/mm
Compliance
CMS
118
µm/N
Equivalent volume to the compliance
VAS
48.7
L
Mechanical resistance
RMS
4.73
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
318
mm
Baffle cutout diameter
295
mm
Mounting depth
89
mm
Volume occupied by the driver
0.82
L
Net weight
6.8
kg
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