Eighteen Sound 12LW801
Subwoofer
12″ / 300 mm
Nominal diameter
54 Hz
Resonance
0.33
Q factor
94 dB
Sensitivity
± 8 mm
Linear excursion
800 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.2
dB
Frequency response
40 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
54.0
Hz
Mechanical quality factor
QMS
9.00
Electrical quality factor
QES
0.34
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
8.0
mm
Air volume displaced at xmax
VD
425
cm³
Power handling
P
500
W
Program power
Pmax
800
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
1.7
mH
VC Diameter
75
mm
Winding material
Copper
Magnet
Force factor
Bl
20.3
N/A
Motor constant
Bl/√RE
9.08
N/√W
Material
Ferrite
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
84
g
Moving mass (without air load)
MMD
75.2
g
Material
Weather protected
Suspensions
Stiffness
KMS
9.71
N/mm
Compliance
CMS
103
µm/N
Equivalent volume to the compliance
VAS
41
L
Mechanical resistance
RMS
3.17
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
159
mm
Flange thickness
20
mm
Mounting depth
139
mm
Volume occupied by the driver (estimated)
3.5
L
Net weight
8.1
kg
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SD
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46 - 4200 Hz
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Bl/√RE
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SD
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45 - 5000 Hz
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xmax
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