15″ / 380 mm
Nominal diameter
40 Hz
Resonance
0.25
Q factor
95 dB
Sensitivity
± 10 mm
Linear excursion
2400 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
95.3
dB
Frequency response
37 - 2300
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
40.0
Hz
Mechanical quality factor
QMS
6.14
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.25
Large signal parameters
Maximum linear excursion
xmax
10.0
mm
Air volume displaced at xmax
VD
850
cm³
Power handling
P
1200
W
Program power
Pmax
2400
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.8
Ω
Inductance (1kHz)
LE
1.23
mH
VC Diameter
100
mm
Magnet
Force factor
Bl
20.0
N/A
Motor constant
Bl/√RE
12.0
N/√W
Diaphragm
Effective diameter
329
mm
Effective area
SD
850
cm²
Moving mass
MMS
150
g
Moving mass (without air load)
MMD
132.5
g
Material
Weather protected
Suspensions
Stiffness
KMS
9.43
N/mm
Compliance
CMS
106
µm/N
Equivalent volume to the compliance
VAS
114
L
Mechanical resistance
RMS
6.14
N·s/m
Spider material
Double Silicon
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
393
mm
Baffle cutout diameter
354
mm
Overall depth
180
mm
Flange thickness
12
mm
Mounting depth
168
mm
Volume occupied by the driver (estimated)
4.1
L
Net weight
7.5
kg
Similar subwoofers to Eighteen Sound 15NLW9401
15″Subwoofer
fS
39 Hz
SD
850 cm²
37 - 2300 Hz
QTS
0.26
xmax
10.0 mm
SPL1W
95 dB
Bl/√RE
11
Pmax
2400 W
15″Mid Bass
fS
37 Hz
SD
895 cm²
45 - 2000 Hz
QTS
0.23
xmax
12.0 mm
SPL1W
96 dB
Bl/√RE
12
Pmax
2000 W
12″Subwoofer
fS
34 Hz
SD
530 cm²
45 - 3000 Hz
QTS
0.24
xmax
8.5 mm
SPL1W
95 dB
Bl/√RE
7.88
Pmax
1000 W