Eighteen Sound 15NCX1000
Coaxial
15″ / 380 mm
Nominal diameter
53 Hz
Resonance
0.31
Q factor
98 dB
Sensitivity
± 7.5 mm
Linear excursion
1200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
97.6
dB
Frequency response
44 - 3600
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
53.0
Hz
Mechanical quality factor
QMS
10.40
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.31
Large signal parameters
Maximum linear excursion
xmax
7.5
mm
Air volume displaced at xmax
VD
661
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
1.4
mH
VC Diameter
100
mm
Winding material
CCAW Aluminum
Magnet
Force factor
Bl
27.5
N/A
Motor constant
Bl/√RE
11.0
N/√W
Diaphragm
Effective diameter
335
mm
Effective area
SD
881
cm²
Moving mass
MMS
110
g
Moving mass (without air load)
MMD
91.8
g
Material
Water repellent
Suspensions
Stiffness
KMS
12.2
N/mm
Compliance
CMS
82
µm/N
Equivalent volume to the compliance
VAS
75
L
Mechanical resistance
RMS
3.52
N·s/m
Dimensions
Nominal diameter
15
″
380
mm
Overall diameter
393
mm
Baffle cutout diameter
354
mm
Overall depth
197
mm
Flange thickness
12
mm
Mounting depth
185
mm
Volume occupied by the driver (estimated)
4.7
L
Net weight
8.5
kg
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fS
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SD
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50 - 2000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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2400 W
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fS
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SD
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fS
51 Hz
SD
531 cm²
55 - 3500 Hz
QTS
0.30
xmax
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SPL1W
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Bl/√RE
6.95
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