Hertz CPX 690 PRO

3 Way

6x9″/ 152x229 mm
Nominal size
60 Hz
Resonance
0.61
Q factor
89 dB
Sensitivity
± 5 mm
Linear excursion
360 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
89.3
dB
Frequency response
35 - 24000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
60.0
Hz
Mechanical quality factor
QMS
3.50
Electrical quality factor
QES
0.74
Total quality factor
QTS
0.61

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
116
cm³
Power handling
P
120
W
Program power
Pmax
360
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.57
mH
VC Diameter
30
mm

Magnet

Force factor
Bl
6.28
N/A
Motor constant
Bl/√RE
3.57
N/√W
Material
Ferrite

Diaphragm

Effective diameter
172
mm
Effective area
SD
232
cm²
Moving mass
MMS
25
g
Moving mass (without air load)
MMD
23.4
g
Material
Water repellent pressed paper

Suspensions

Stiffness
KMS
3.57
N/mm
Compliance
CMS
280
µm/N
Equivalent volume to the compliance
VAS
21.4
L
Mechanical resistance
RMS
2.69
N·s/m

Dimensions

Nominal size
6 x 9
152 x 229
mm
Volume occupied by the driver (estimated)
0.4
L
Hertz CPX 690 PRO SPL & Impedance

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SD
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