15″ / 388 mm
Nominal diameter
38 Hz
Resonance
0.37
Q factor
92 dB
Sensitivity
± 10 mm
Linear excursion
2000 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
92.2
dB
Frequency response
35 - 1000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.7
Hz
Mechanical quality factor
QMS
7.90
Electrical quality factor
QES
0.39
Total quality factor
QTS
0.37
Large signal parameters
Maximum linear excursion
xmax
10.0
mm
Air volume displaced at xmax
VD
861
cm³
Power handling
P
1000
W
Program power
Pmax
2000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
4.3
mH
VC Diameter
100
mm
Former material
Glass Fiber
Magnet
Force factor
Bl
28.9
N/A
Motor constant
Bl/√RE
11.8
N/√W
Diaphragm
Effective diameter
331
mm
Effective area
SD
861
cm²
Moving mass
MMS
230
g
Moving mass (without air load)
MMD
212.5
g
Suspensions
Stiffness
KMS
12.5
N/mm
Compliance
CMS
80
µm/N
Equivalent volume to the compliance
VAS
80.4
L
Mechanical resistance
RMS
6.9
N·s/m
Dimensions
Nominal diameter
15
″
388
mm
Overall diameter
388
mm
Baffle cutout diameter
354
mm
Overall depth
173
mm
Volume occupied by the driver (estimated)
4.2
L
Frame material
Cast Aluminium
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18″Subwoofer
fS
32 Hz
SD
1210 cm²
QTS
0.29
xmax
34.0 mm
SPL1W
93 dB
Bl/√RE
16
Pmax
5000 W
18″Subwoofer
fS
32 Hz
SD
1210 cm²
QTS
0.29
xmax
34.0 mm
SPL1W
93 dB
Bl/√RE
16
Pmax
5000 W
18″Subwoofer
fS
32 Hz
SD
1210 cm²
QTS
0.34
xmax
34.0 mm
SPL1W
93 dB
Bl/√RE
15
Pmax
5000 W