12″ / 300 mm
Nominal diameter
46 Hz
Resonance
0.36
Q factor
96 dB
Sensitivity
± 4 mm
Linear excursion
500 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
96.0
dB
Frequency response
50 - 6000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
46.0
Hz
Mechanical quality factor
QMS
6.02
Electrical quality factor
QES
0.38
Total quality factor
QTS
0.36
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
212
cm³
Power handling
P
350
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
1.12
mH
VC Diameter
64
mm
Winding material
Aluminum
Magnet
Force factor
Bl
12.1
N/A
Motor constant
Bl/√RE
5.31
N/√W
Material
Ferrite
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
36.5
g
Moving mass (without air load)
MMD
27.7
g
Material
Weather protected
Suspensions
Stiffness
KMS
3.05
N/mm
Compliance
CMS
328
µm/N
Equivalent volume to the compliance
VAS
123
L
Mechanical resistance
RMS
1.75
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
141
mm
Flange thickness
16
mm
Mounting depth
125
mm
Volume occupied by the driver (estimated)
2.4
L
Net weight
5.2
kg
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Export this driver to a simulation software:
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QSpeakers
SpeakerSim
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SpeakerbenchSimilar woofers to Eighteen Sound 12W500 8Ω
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fS
45 Hz
SD
855 cm²
45 - 3000 Hz
QTS
0.34
xmax
8.0 mm
SPL1W
96 dB
Bl/√RE
8.99
Pmax
1400 W
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fS
44 Hz
SD
880 cm²
45 - 4000 Hz
QTS
0.34
xmax
7.0 mm
SPL1W
97 dB
Bl/√RE
8.69
Pmax
1400 W
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fS
44 Hz
SD
829 cm²
50 - 16000 Hz
QTS
0.36
xmax
7.8 mm
SPL1W
96 dB
Bl/√RE
8.21
Pmax
900 W