15″ / 381 mm
Nominal diameter
31 Hz
Resonance
0.25
Q factor
97 dB
Sensitivity
± 2.4 mm
Linear excursion
900 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
96.9
dB
Frequency response
63 - 2800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
31.0
Hz
Mechanical quality factor
QMS
10.14
Electrical quality factor
QES
0.25
Total quality factor
QTS
0.25
Large signal parameters
Maximum linear excursion
xmax
2.4
mm
Maximum excursion before damage
xlim
11.6
mm
Air volume displaced at xmax
VD
206
cm³
Power handling
P
450
W
Program power
Pmax
900
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
0.88
mH
VC Diameter
76
mm
Magnet
Force factor
Bl
14.7
N/A
Motor constant
Bl/√RE
7.66
N/√W
Air gap height
HAG
9.5
mm
Weight
2.268
kg
Diaphragm
Effective diameter
330
mm
Effective area
SD
856
cm²
Moving mass
MMS
77
g
Moving mass (without air load)
MMD
59.7
g
Suspensions
Stiffness
KMS
2.86
N/mm
Compliance
CMS
350
µm/N
Equivalent volume to the compliance
VAS
330
L
Mechanical resistance
RMS
1.48
N·s/m
Dimensions
Nominal diameter
15
″
381
mm
Overall diameter
385
mm
Baffle cutout diameter
352
mm
Overall depth
156
mm
Volume occupied by the driver
3.92
L
Net weight
7.98
kg
Frame material
Pressed steel
Similar woofers to Eminence KAPPA-15C
18″Woofer
fS
30 Hz
SD
1180 cm²
30 - 2500 Hz
QTS
0.27
xmax
5.0 mm
SPL1W
96 dB
Bl/√RE
11
Pmax
1000 W
18″Low frequency
fS
33 Hz
SD
1164 cm²
30 - 2000 Hz
QTS
0.28
xmax
6.0 mm
SPL1W
97 dB
Bl/√RE
9.76
Pmax
1200 W
18″Woofer
fS
30 Hz
SD
1158 cm²
30 - 1000 Hz
QTS
0.24
xmax
13.0 mm
SPL1W
98 dB
Bl/√RE
11
Pmax
1400 W