Eighteen Sound 8NMB750 16Ω

16Ω

Woofer

8″ / 225 mm
Nominal diameter
91 Hz
Resonance
0.37
Q factor
94 dB
Sensitivity
± 6.3 mm
Linear excursion
700 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
94.2
dB
Frequency response
56 - 7000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
91.0
Hz
Mechanical quality factor
QMS
5.90
Electrical quality factor
QES
0.39
Total quality factor
QTS
0.37

Large signal parameters

Maximum linear excursion
xmax
6.3
mm
Air volume displaced at xmax
VD
145
cm³
Power handling
P
350
W
Program power
Pmax
700
W

Voice Coil

Nominal impedance
Z
16
Ω
DC resistance
RE
10.2
Ω
Inductance (1kHz)
LE
0.3
mH
VC Diameter
75
mm

Magnet

Force factor
Bl
21.5
N/A
Motor constant
Bl/√RE
6.73
N/√W
Material
Neodymium

Diaphragm

Effective diameter
171
mm
Effective area
SD
230
cm²
Moving mass
MMS
30
g
Moving mass (without air load)
MMD
27.3
g
Material
Water,UV repellent

Suspensions

Stiffness
KMS
9.8
N/mm
Compliance
CMS
102
µm/N
Equivalent volume to the compliance
VAS
7.3
L
Mechanical resistance
RMS
2.91
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
Eighteen Sound 8NMB750 16Ω Impedance
Eighteen Sound 8NMB750 16Ω SPL
Eighteen Sound 8NMB750 16Ω Dimensions

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