Hertz Cento CX 165
2 Way
6.5″ / 165 mm
Nominal diameter
65 Hz
Resonance
0.6
Q factor
88 dB
Sensitivity
± 3.5 mm
Linear excursion
140 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.0
dB
Frequency response
55 - 22000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
65.0
Hz
Mechanical quality factor
QMS
3.40
Electrical quality factor
QES
0.73
Total quality factor
QTS
0.60
Large signal parameters
Maximum linear excursion
xmax
3.5
mm
Maximum excursion before damage
xlim
4.9
mm
Air volume displaced at xmax
VD
48
cm³
Power handling
P
70
W
Program power
Pmax
140
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.21
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
4.8
N/A
Motor constant
Bl/√RE
2.68
N/√W
Diameter
85
mm
Material
Ferrite
Diaphragm
Effective diameter
132
mm
Effective area
SD
137
cm²
Moving mass
MMS
13.3
g
Moving mass (without air load)
MMD
12.1
g
Material
Semi-pressed paper + Mica
Suspensions
Stiffness
KMS
2.17
N/mm
Compliance
CMS
460
µm/N
Equivalent volume to the compliance
VAS
12.2
L
Mechanical resistance
RMS
1.6
N·s/m
Dimensions
Nominal diameter
6.5
″
165
mm
Overall diameter
165
mm
Baffle cutout diameter
142
mm
Overall depth
71
mm
Flange thickness
8
mm
Mounting depth
63
mm
Volume occupied by the driver (estimated)
0.34
L
Net weight
0.95
kg
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SpeakerbenchSimilar woofers to Hertz CX 165
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6.5″2 way kit
fS
64 Hz
SD
129 cm²
60 - 22000 Hz
QTS
0.62
xmax
4.5 mm
SPL1W
88 dB
Bl/√RE
2.91
Pmax
200 W
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6.5″2 way
fS
65 Hz
SD
129 cm²
60 - 22000 Hz
QTS
0.55
xmax
4.5 mm
SPL1W
88 dB
Bl/√RE
3.06
Pmax
160 W
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6.5″2 Way Kit
fS
60 Hz
SD
136 cm²
45 - 22500 Hz
QTS
0.57
xmax
3.9 mm
SPL1W
88 dB
Bl/√RE
3.0
Pmax
315 W