Hertz EV F165.5
Woofer
6.5″ / 165 mm
Nominal diameter
80 Hz
Resonance
0.8
Q factor
88 dB
Sensitivity
± 3 mm
Linear excursion
180 W
Program Power
Discontinued
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
88.3
dB
Frequency response
65 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
80.0
Hz
Mechanical quality factor
QMS
3.40
Electrical quality factor
QES
1.00
Total quality factor
QTS
0.80
Large signal parameters
Maximum linear excursion
xmax
3.0
mm
Air volume displaced at xmax
VD
43
cm³
Power handling
P
60
W
Program power
Pmax
180
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
2.7
Ω
Inductance (1kHz)
LE
0.14
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
3.9
N/A
Motor constant
Bl/√RE
2.37
N/√W
Material
High density flux ferrite
Diaphragm
Effective diameter
134
mm
Effective area
SD
142
cm²
Moving mass
MMS
12
g
Moving mass (without air load)
MMD
10.8
g
Material
Water repellent pressed paper
Suspensions
Stiffness
KMS
3.03
N/mm
Compliance
CMS
330
µm/N
Equivalent volume to the compliance
VAS
9.4
L
Mechanical resistance
RMS
1.77
N·s/m
Dimensions
Nominal diameter
6.5
″
165
mm
Volume occupied by the driver (estimated)
0.5
L
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SpeakerbenchSimilar woofers to Hertz EV F165.5
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6.5″Woofer
fS
80 Hz
SD
142 cm²
65 - 5000 Hz
QTS
0.80
xmax
3.2 mm
SPL1W
88 dB
Bl/√RE
2.37
Pmax
180 W
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Hertz CX 6904 Ω
6 x 9″3 Way
fS
70 Hz
SD
152 cm²
40 - 23000 Hz
QTS
0.67
xmax
3.5 mm
SPL1W
89 dB
Bl/√RE
2.7
Pmax
200 W