Eighteen Sound 15ND830 8Ω

4Ω
8Ω

Subwoofer

15″ / 380 mm
Nominal diameter
39 Hz
Resonance
0.32
Q factor
96 dB
Sensitivity
± 6.5 mm
Linear excursion
700 W
Program Power
Eighteen Sound 15ND830 8Ω SubwooferEighteen Sound 15ND830 8Ω SubwooferEighteen Sound 15ND830 8Ω Subwoofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
96.3
dB
Frequency response
38 - 5000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
39.0
Hz
Mechanical quality factor
QMS
3.90
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.32

Large signal parameters

Maximum linear excursion
xmax
6.5
mm
Air volume displaced at xmax
VD
553
cm³
Power handling
P
450
W
Program power
Pmax
700
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.7
Ω
Inductance (1kHz)
LE
1.54
mH
VC Diameter
75
mm
Winding material
Aluminum

Magnet

Force factor
Bl
18.0
N/A
Motor constant
Bl/√RE
7.54
N/√W
Material
Neodymium

Diaphragm

Effective diameter
329
mm
Effective area
SD
850
cm²
Moving mass
MMS
80
g
Moving mass (without air load)
MMD
62.7
g
Material
Weather protected

Suspensions

Stiffness
KMS
4.81
N/mm
Compliance
CMS
208
µm/N
Equivalent volume to the compliance
VAS
213
L
Mechanical resistance
RMS
5.03
N·s/m

Dimensions

Nominal diameter
15
″
380
mm
Overall diameter
387
mm
Baffle cutout diameter
353
mm
Overall depth
177
mm
Flange thickness
11
mm
Mounting depth
166
mm
Volume occupied by the driver (estimated)
2.9
L
Net weight
4.6
kg
Impedance
SPL
Eighteen Sound 15ND830 8Ω Impedance
Eighteen Sound 15ND830 8Ω SPL
Eighteen Sound 15ND830 8Ω Dimensions
DatasheetDatasheet

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