Fountek FW168K
Mid Bass
6.5″ / 168 mm
Nominal diameter
49 Hz
Resonance
0.43
Q factor
87 dB
Sensitivity
± 5 mm
Linear excursion
100 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.9
dB
Frequency response
70 - 4500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
48.6
Hz
Mechanical quality factor
QMS
2.32
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.43
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
62
cm³
Power handling
P
50
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.8
Ω
Inductance (1kHz, estimated)
LE
0.5
mH
VC Diameter
36
mm
Winding height
HVC
15
mm
Winding material
Copper
Former material
Black Aluminum
Magnet
Flux density
B
1.0
T
Force factor
Bl
7.9
N/A
Motor constant
Bl/√RE
3.03
N/√W
Air gap height
HAG
5
mm
Material
Ferrite
Diaphragm
Effective diameter
126
mm
Effective area
SD
125
cm²
Moving mass
MMS
15.7
g
Moving mass (without air load)
MMD
14.5
g
Suspensions
Stiffness
KMS
1.46
N/mm
Compliance
CMS
684
µm/N
Equivalent volume to the compliance
VAS
15.1
L
Mechanical resistance
RMS
2.06
N·s/m
Dimensions
Nominal diameter
6.5
″
168
mm
Overall diameter
182
mm
Overall depth
87
mm
Volume occupied by the driver (estimated)
0.55
L
Net weight
1.45
kg
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SpeakerbenchSimilar woofers to Fountek FW168K
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6.5″Mid Bass
fS
45 Hz
SD
119 cm²
40 - 4000 Hz
QTS
0.40
xmax
4.6 mm
SPL1W
87 dB
Bl/√RE
3.06
Pmax
100 W
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5.25″Mid Bass
fS
51 Hz
SD
82 cm²
51 - 3500 Hz
QTS
0.45
xmax
3.5 mm
SPL1W
86 dB
Bl/√RE
2.19
Pmax
180 W
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5″Mid Bass
fS
50 Hz
SD
74 cm²
50 - 12000 Hz
QTS
0.45
xmax
2.3 mm
SPL1W
88 dB
Bl/√RE
1.92
Pmax
80 W