15″ / 380 mm
Nominal diameter
48 Hz
Resonance
0.32
Q factor
97 dB
Sensitivity
± 6 mm
Linear excursion
1200 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
97.2
dB
Frequency response
39 - 2800
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
48.0
Hz
Mechanical quality factor
QMS
8.50
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.32
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Maximum excursion before damage
xlim
19.5
mm
Air volume displaced at xmax
VD
540
cm³
Power handling
P
800
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
1.55
mH
VC Diameter
100
mm
Magnet
Force factor
Bl
22.3
N/A
Motor constant
Bl/√RE
9.51
N/√W
Diaphragm
Effective diameter
339
mm
Effective area
SD
900
cm²
Moving mass
MMS
99
g
Moving mass (without air load)
MMD
80.7
g
Suspensions
Stiffness
KMS
9.35
N/mm
Compliance
CMS
107
µm/N
Equivalent volume to the compliance
VAS
123
L
Mechanical resistance
RMS
3.51
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
387
mm
Baffle cutout diameter
357
mm
Overall depth
161
mm
Flange thickness
20
mm
Mounting depth
141
mm
Volume occupied by the driver (estimated)
5.2
L
Net weight
12.3
kg
Similar subwoofers to Eighteen Sound 15W1301
15″Coaxial
fS
48 Hz
SD
855 cm²
45 - 20000 Hz
QTS
0.31
xmax
6.0 mm
SPL1W
97 dB
Bl/√RE
8.95
Pmax
1000 W
15″Subwoofer
fS
48 Hz
SD
850 cm²
45 - 5100 Hz
QTS
0.31
xmax
6.0 mm
SPL1W
97 dB
Bl/√RE
8.95
Pmax
1200 W
15″Coaxial
fS
47 Hz
SD
855 cm²
45 - 18000 Hz
QTS
0.30
xmax
8.5 mm
SPL1W
97 dB
Bl/√RE
9.39
Pmax
1000 W