Eighteen Sound 12NW530
Subwoofer
12″ / 300 mm
Nominal diameter
55 Hz
Resonance
0.37
Q factor
93 dB
Sensitivity
± 8 mm
Linear excursion
800 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.2
dB
Frequency response
48 - 3200
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
55.0
Hz
Mechanical quality factor
QMS
9.70
Electrical quality factor
QES
0.38
Total quality factor
QTS
0.37
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
424
cm³
Power handling
P
500
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
4.9
Ω
Inductance (1kHz)
LE
0.9
mH
VC Diameter
75
mm
Winding material
Copper
Magnet
Force factor
Bl
19.7
N/A
Motor constant
Bl/√RE
8.9
N/√W
Material
Neodymium
Diaphragm
Effective diameter
260
mm
Effective area
SD
530
cm²
Moving mass
MMS
93
g
Moving mass (without air load)
MMD
84.3
g
Material
Water,UV repellent
Suspensions
Stiffness
KMS
11.11
N/mm
Compliance
CMS
90
µm/N
Equivalent volume to the compliance
VAS
36
L
Mechanical resistance
RMS
3.31
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
136
mm
Flange thickness
11
mm
Mounting depth
125
mm
Volume occupied by the driver (estimated)
2.0
L
Net weight
4.0
kg
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SD
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55 - 5000 Hz
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xmax
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