Hertz CPX 165 PRO

2 Way

6.5″ / 165 mm
Nominal diameter
60 Hz
Resonance
0.55
Q factor
88 dB
Sensitivity
± 3.9 mm
Linear excursion
285 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
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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
87.7
dB
Frequency response
45 - 22000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
60.0
Hz
Mechanical quality factor
QMS
4.10
Electrical quality factor
QES
0.64
Total quality factor
QTS
0.55

Large signal parameters

Maximum linear excursion
xmax
3.9
mm
Air volume displaced at xmax
VD
52
cm³
Power handling
P
95
W
Program power
Pmax
285
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
0.29
mH
VC Diameter
25
mm

Magnet

Force factor
Bl
5.3
N/A
Motor constant
Bl/√RE
2.92
N/√W
Material
High density flux ferrite

Diaphragm

Effective diameter
132
mm
Effective area
SD
133
cm²
Moving mass
MMS
14.6
g
Moving mass (without air load)
MMD
13.5
g
Material
Pressed-paper cone

Suspensions

Stiffness
KMS
2.13
N/mm
Compliance
CMS
470
µm/N
Equivalent volume to the compliance
VAS
11.8
L
Mechanical resistance
RMS
1.34
N·s/m

Dimensions

Nominal diameter
6.5
165
mm
Volume occupied by the driver (estimated)
0.5
L
Hertz CPX 165 PRO SPL & Impedance

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