Eighteen Sound 12NW350
Subwoofer
12″ / 310 mm
Nominal diameter
54 Hz
Resonance
0.34
Q factor
95 dB
Sensitivity
± 8.3 mm
Linear excursion
1600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.7
dB
Frequency response
50 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
54.0
Hz
Mechanical quality factor
QMS
12.00
Electrical quality factor
QES
0.35
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
8.3
mm
Air volume displaced at xmax
VD
441
cm³
Power handling
P
800
W
Program power
Pmax
1600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
0.85
mH
VC Diameter
88
mm
Winding height
HVC
22
mm
Magnet
Force factor
Bl
19.2
N/A
Motor constant
Bl/√RE
8.59
N/√W
Air gap height
HAG
11
mm
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
75
g
Moving mass (without air load)
MMD
66.4
g
Material
Reinforced, water repellent
Suspensions
Stiffness
KMS
8.62
N/mm
Compliance
CMS
116
µm/N
Equivalent volume to the compliance
VAS
46
L
Mechanical resistance
RMS
2.12
N·s/m
Dimensions
Nominal diameter
12
″
310
mm
Overall diameter
310
mm
Baffle cutout diameter
283
mm
Overall depth
150
mm
Flange thickness
13
mm
Mounting depth
137
mm
Volume occupied by the driver (estimated)
2.5
L
Net weight
5.1
kg
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SpeakerbenchSimilar subwoofers to Eighteen Sound 12NW350
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12″Low frequency
fS
56 Hz
SD
531 cm²
50 - 2500 Hz
QTS
0.35
xmax
2.6 mm
SPL1W
95 dB
Bl/√RE
8.17
Pmax
1600 W
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12″Low frequency
fS
55 Hz
SD
531 cm²
60 - 2500 Hz
QTS
0.32
xmax
2.6 mm
SPL1W
95 dB
Bl/√RE
8.46
Pmax
1200 W
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12″Subwoofer
fS
53 Hz
SD
531 cm²
50 - 3000 Hz
QTS
0.33
xmax
8.3 mm
SPL1W
95 dB
Bl/√RE
8.63
Pmax
1800 W