Eighteen Sound 12NMB1000
Mid Bass
12″ / 300 mm
Nominal diameter
54 Hz
Resonance
0.19
Q factor
98 dB
Sensitivity
± 3.5 mm
Linear excursion
1200 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
98.3
dB
Frequency response
60 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
54.0
Hz
Mechanical quality factor
QMS
8.40
Electrical quality factor
QES
0.19
Total quality factor
QTS
0.19
Large signal parameters
Maximum linear excursion
xmax
3.5
mm
Air volume displaced at xmax
VD
186
cm³
Power handling
P
600
W
Program power
Pmax
1200
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
0.69
mH
VC Diameter
100
mm
Winding material
Copper
Magnet
Force factor
Bl
24.4
N/A
Motor constant
Bl/√RE
10.4
N/√W
Material
Neodymium
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
61
g
Moving mass (without air load)
MMD
52.2
g
Material
Weather protected
Suspensions
Stiffness
KMS
7.04
N/mm
Compliance
CMS
142
µm/N
Equivalent volume to the compliance
VAS
58
L
Mechanical resistance
RMS
2.46
N·s/m
Dimensions
Nominal diameter
12
″
300
mm
Overall diameter
315
mm
Baffle cutout diameter
282
mm
Overall depth
116
mm
Flange thickness
18
mm
Mounting depth
98
mm
Volume occupied by the driver (estimated)
2.2
L
Net weight
5.6
kg
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QSpeakers
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SpeakerbenchSimilar speaker drivers to Eighteen Sound 12NMB1000
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12″Mid Bass
fS
53 Hz
SD
522 cm²
50 - 3000 Hz
QTS
0.19
xmax
5.0 mm
SPL1W
98 dB
Bl/√RE
9.78
Pmax
800 W
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10″Mid-range
fS
50 Hz
SD
380 cm²
70 - 4000 Hz
QTS
0.21
xmax
4.5 mm
SPL1W
96 dB
Bl/√RE
7.45
Pmax
700 W
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12″Subwoofer
fS
47 Hz
SD
550 cm²
50 - 4000 Hz
QTS
0.19
xmax
7.5 mm
SPL1W
97 dB
Bl/√RE
11
Pmax
1400 W