Eighteen Sound 18ND9300

Subwoofer

18″ / 460 mm
Nominal diameter
30 Hz
Resonance
0.28
Q factor
96 dB
Sensitivity
± 9.5 mm
Linear excursion
1400 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
95.7
dB
Frequency response
28 - 2500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
30.0
Hz
Mechanical quality factor
QMS
7.86
Electrical quality factor
QES
0.29
Total quality factor
QTS
0.28

Large signal parameters

Maximum linear excursion
xmax
9.5
mm
Maximum excursion before damage
xlim
25.0
mm
Air volume displaced at xmax
VD
1159
cm³
Power handling
P
1000
W
Program power
Pmax
1400
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
2.02
mH
VC Diameter
100
mm
Winding material
Copper

Magnet

Force factor
Bl
24.4
N/A
Motor constant
Bl/√RE
10.9
N/√W
Material
Neodymium

Diaphragm

Effective diameter
394
mm
Effective area
SD
1220
cm²
Moving mass
MMS
184
g
Moving mass (without air load)
MMD
154.4
g
Material
Straight ribbed carbon fiber loaded cellulose

Suspensions

Stiffness
KMS
6.67
N/mm
Compliance
CMS
150
µm/N
Equivalent volume to the compliance
VAS
316
L
Mechanical resistance
RMS
4.41
N·s/m
Surround material
Triple roll, Polycotton

Dimensions

Nominal diameter
18
460
mm
Overall diameter
462
mm
Baffle cutout diameter
422
mm
Overall depth
224
mm
Flange thickness
26
mm
Mounting depth
198
mm
Volume occupied by the driver (estimated)
5.3
L
Net weight
7.6
kg
Eighteen Sound 18ND9300 Impedance
Eighteen Sound 18ND9300 SPL
Eighteen Sound 18ND9300 Dimensions

Export this driver to a simulation software:

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