8″ / 225 mm
Nominal diameter
88 Hz
Resonance
0.27
Q factor
94 dB
Sensitivity
± 6.1 mm
Linear excursion
700 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.1
dB
Frequency response
80 - 6000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
88.0
Hz
Mechanical quality factor
QMS
6.10
Electrical quality factor
QES
0.28
Total quality factor
QTS
0.27
Large signal parameters
Maximum linear excursion
xmax
6.1
mm
Air volume displaced at xmax
VD
140
cm³
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.2
Ω
Inductance (1kHz)
LE
0.29
mH
VC Diameter
75
mm
Winding material
Aluminum
Magnet
Force factor
Bl
18.7
N/A
Motor constant
Bl/√RE
8.2
N/√W
Material
Neodymium
Diaphragm
Effective diameter
171
mm
Effective area
SD
230
cm²
Moving mass
MMS
35
g
Moving mass (without air load)
MMD
32.3
g
Material
Water,UV repellent
Suspensions
Stiffness
KMS
10.75
N/mm
Compliance
CMS
93
µm/N
Equivalent volume to the compliance
VAS
6.9
L
Mechanical resistance
RMS
3.17
N·s/m
Dimensions
Nominal diameter
8
″
225
mm
Overall diameter
225
mm
Baffle cutout diameter
186
mm
Overall depth
105
mm
Flange thickness
11
mm
Mounting depth
94
mm
Volume occupied by the driver (estimated)
1.2
L
Net weight
3.5
kg
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar woofers to Eighteen Sound 8NMB750
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8″Low frequency
fS
71 Hz
SD
227 cm²
70 - 5000 Hz
QTS
0.21
xmax
6.5 mm
SPL1W
94 dB
Bl/√RE
7.69
Pmax
400 W
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8″Low frequency
fS
74 Hz
SD
214 cm²
70 - 5000 Hz
QTS
0.24
xmax
3.8 mm
SPL1W
95 dB
Bl/√RE
7.02
Pmax
600 W
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8″Mid Bass
fS
74 Hz
SD
220 cm²
70 - 5000 Hz
QTS
0.21
xmax
6.0 mm
SPL1W
95 dB
Bl/√RE
7.76
Pmax
400 W