Eighteen Sound 15ND730
Subwoofer
15″ / 380 mm
Nominal diameter
44 Hz
Resonance
0.29
Q factor
98 dB
Sensitivity
± 6.5 mm
Linear excursion
600 W
Program Power
.jpg)
Sensitivity (1w, 1m, infinite baffle)
SPL1W
97.7
dB
Frequency response
44 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
44.0
Hz
Mechanical quality factor
QMS
8.10
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.29
Large signal parameters
Maximum linear excursion
xmax
6.5
mm
Air volume displaced at xmax
VD
585
cm³
Power handling
P
400
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
1.35
mH
VC Diameter
75
mm
Magnet
Force factor
Bl
21.0
N/A
Motor constant
Bl/√RE
8.95
N/√W
Material
Neodymium
Diaphragm
Effective diameter
339
mm
Effective area
SD
900
cm²
Moving mass
MMS
86
g
Moving mass (without air load)
MMD
67.7
g
Material
Weather protected
Suspensions
Stiffness
KMS
6.58
N/mm
Compliance
CMS
152
µm/N
Equivalent volume to the compliance
VAS
156
L
Mechanical resistance
RMS
2.94
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
387
mm
Baffle cutout diameter
353
mm
Overall depth
169
mm
Flange thickness
11
mm
Mounting depth
158
mm
Volume occupied by the driver (estimated)
2.6
L
Net weight
3.9
kg
.png)
.png)
.png)
Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar subwoofers to Eighteen Sound 15ND730
.png.webp)
18″Triaxial
fS
44 Hz
SD
1210 cm²
440 - 18000 Hz
QTS
0.32
xmax
10.0 mm
SPL1W
98 dB
Bl/√RE
11
Pmax
1600 W
.jpg.webp)
15″Subwoofer
fS
40 Hz
SD
900 cm²
50 - 4800 Hz
QTS
0.26
xmax
4.0 mm
SPL1W
98 dB
Bl/√RE
8.53
Pmax
600 W
.jpg.webp)
15″Coaxial
fS
44 Hz
SD
880 cm²
40 - 20000 Hz
QTS
0.23
xmax
5.5 mm
SPL1W
97 dB
Bl/√RE
7.97
Pmax
1400 W