15″ / 380 mm
Nominal diameter
32 Hz
Resonance
0.27
Q factor
94 dB
Sensitivity
± 5 mm
Linear excursion
1000 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
94.3
dB
Frequency response
28 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
31.6
Hz
Mechanical quality factor
QMS
12.20
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.27
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
423
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
4.12
mH
VC Diameter
76
mm
Former material
Kapton® / Polyimide
Magnet
Force factor
Bl
25.8
N/A
Motor constant
Bl/√RE
10.3
N/√W
Weight
2.268
kg
Diaphragm
Effective diameter
328
mm
Effective area
SD
845
cm²
Moving mass
MMS
147
g
Moving mass (without air load)
MMD
130.1
g
Material
Paper / Carbon Fiber
Suspensions
Stiffness
KMS
5.88
N/mm
Compliance
CMS
170
µm/N
Equivalent volume to the compliance
VAS
175
L
Mechanical resistance
RMS
2.39
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
380
mm
Baffle cutout diameter
355
mm
Overall depth
163
mm
Volume occupied by the driver (estimated)
3.8
L
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fS
29 Hz
SD
1225 cm²
30 - 800 Hz
QTS
0.27
xmax
15.0 mm
SPL1W
94 dB
Bl/√RE
14
Pmax
3000 W
18″Subwoofer
fS
32 Hz
SD
1225 cm²
35 - 1000 Hz
QTS
0.30
xmax
17.5 mm
SPL1W
94 dB
Bl/√RE
14
Pmax
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18″Subwoofer
fS
30 Hz
SD
1225 cm²
30 - 800 Hz
QTS
0.28
xmax
14.0 mm
SPL1W
94 dB
Bl/√RE
15
Pmax
3000 W