Fostex FE168NS

Full-range

6.3″ / 160 mm
Nominal diameter
60 Hz
Resonance
0.39
Q factor
93 dB
Sensitivity
± 2.2 mm
Linear excursion
60 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
92.6
dB
Frequency response
60 - 20000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
60.0
Hz
Mechanical quality factor
QMS
7.30
Electrical quality factor
QES
0.40
Total quality factor
QTS
0.39

Large signal parameters

Maximum linear excursion
xmax
2.2
mm
Air volume displaced at xmax
VD
28
cm³
Power handling
P
20
W
Program power
Pmax
60
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
7.1
Ω
Inductance (1kHz)
LE
0.18
mH
VC Diameter
25
mm

Magnet

Force factor
Bl
7.4
N/A
Motor constant
Bl/√RE
2.78
N/√W
Diameter
120
mm
Weight
0.72
kg
Material
Ferrite

Diaphragm

Effective diameter
128
mm
Effective area
SD
129
cm²
Moving mass
MMS
8.5
g
Moving mass (without air load)
MMD
7.3
g

Suspensions

Stiffness
KMS
1.21
N/mm
Compliance
CMS
830
µm/N
Equivalent volume to the compliance
VAS
19.5
L
Mechanical resistance
RMS
0.44
N·s/m

Dimensions

Nominal diameter
6.3
160
mm
Overall diameter
190
mm
Baffle cutout diameter
151
mm
Overall depth
85
mm
Flange thickness
13
mm
Mounting depth
72
mm
Volume occupied by the driver (estimated)
0.74
L
Net weight
2.28
kg
Fostex FE168NS SPL & Impedance
Fostex FE168NS Dimensions

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