15″ / 380 mm
Nominal diameter
40 Hz
Resonance
0.37
Q factor
96 dB
Sensitivity
± 5.5 mm
Linear excursion
600 W
Program Power
Discontinued
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.2
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
40.0
Hz
Mechanical quality factor
QMS
10.60
Electrical quality factor
QES
0.38
Total quality factor
QTS
0.37
Large signal parameters
Maximum linear excursion
xmax
5.5
mm
Air volume displaced at xmax
VD
470
cm³
Power handling
P
280
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.0
Ω
Inductance (1kHz)
LE
1.2
mH
VC Diameter
64
mm
Winding material
Copper
Former material
Aluminium
Magnet
Force factor
Bl
13.3
N/A
Motor constant
Bl/√RE
7.68
N/√W
Air gap height
HAG
10
mm
Material
Ferrite
Diaphragm
Effective diameter
330
mm
Effective area
SD
855
cm²
Moving mass
MMS
85
g
Moving mass (without air load)
MMD
67.6
g
Material
Treated Paper
Suspensions
Stiffness
KMS
5.78
N/mm
Compliance
CMS
173
µm/N
Equivalent volume to the compliance
VAS
180
L
Mechanical resistance
RMS
2.02
N·s/m
Surround material
Nomex
Spider material
Nomex
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
388
mm
Baffle cutout diameter
354
mm
Overall depth
142
mm
Flange thickness
14
mm
Mounting depth
128
mm
Volume occupied by the driver (estimated)
3.2
L
Frame material
Aluminium
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