Eighteen Sound 12MB710
Subwoofer
12″ / 310 mm
Nominal diameter
46 Hz
Resonance
0.2
Q factor
97 dB
Sensitivity
± 5 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
97.2
dB
Frequency response
90 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
46.0
Hz
Mechanical quality factor
QMS
10.30
Electrical quality factor
QES
0.20
Total quality factor
QTS
0.20
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
266
cm³
Power handling
P
500
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
0.79
mH
VC Diameter
75
mm
Winding height
HVC
15
mm
Winding material
Copper
Magnet
Force factor
Bl
20.5
N/A
Motor constant
Bl/√RE
9.17
N/√W
Air gap height
HAG
10
mm
Material
Ferrite
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
59
g
Moving mass (without air load)
MMD
50.4
g
Material
Weather protected
Suspensions
Stiffness
KMS
4.93
N/mm
Compliance
CMS
203
µm/N
Equivalent volume to the compliance
VAS
81
L
Mechanical resistance
RMS
1.66
N·s/m
Dimensions
Nominal diameter
12
″
310
mm
Overall diameter
310
mm
Baffle cutout diameter
283
mm
Overall depth
142
mm
Flange thickness
13
mm
Mounting depth
129
mm
Volume occupied by the driver (estimated)
3.1
L
Net weight
7.8
kg
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fS
46 Hz
SD
531 cm²
58 - 5000 Hz
QTS
0.19
xmax
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SPL1W
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Bl/√RE
9.07
Pmax
600 W
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fS
44 Hz
SD
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50 - 2000 Hz
QTS
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fS
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SD
522 cm²
50 - 2000 Hz
QTS
0.20
xmax
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SPL1W
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