Eighteen Sound 15ND930 16Ω

16Ω

Subwoofer

15″ / 380 mm
Nominal diameter
38 Hz
Resonance
0.39
Q factor
95 dB
Sensitivity
± 7.5 mm
Linear excursion
800 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
95.2
dB
Frequency response
40 - 4100
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
38.0
Hz
Mechanical quality factor
QMS
9.50
Electrical quality factor
QES
0.40
Total quality factor
QTS
0.39

Large signal parameters

Maximum linear excursion
xmax
7.5
mm
Air volume displaced at xmax
VD
638
cm³
Power handling
P
500
W
Program power
Pmax
800
W

Voice Coil

Nominal impedance
Z
16
Ω
DC resistance
RE
10.9
Ω
Inductance (1kHz)
LE
2.5
mH
VC Diameter
75
mm

Magnet

Force factor
Bl
24.2
N/A
Motor constant
Bl/√RE
7.33
N/√W

Diaphragm

Effective diameter
329
mm
Effective area
SD
850
cm²
Moving mass
MMS
92
g
Moving mass (without air load)
MMD
74.7
g

Suspensions

Stiffness
KMS
5.24
N/mm
Compliance
CMS
191
µm/N
Equivalent volume to the compliance
VAS
195
L
Mechanical resistance
RMS
2.31
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)
2.7
L
Net weight
4.0
kg
Eighteen Sound 15ND930 16Ω Impedance
Eighteen Sound 15ND930 16Ω SPL
Eighteen Sound 15ND930 16Ω Dimensions

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