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
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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
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fS
56 Hz
SD
205 cm²
50 - 22000 Hz
QTS
0.54
xmax
2.0 mm
SPL1W
90 dB
Bl/√RE
3.24
Pmax
150 W
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fS
55 Hz
SD
210 cm²
70 - 9000 Hz
QTS
0.48
xmax
3.0 mm
SPL1W
91 dB
Bl/√RE
3.73
Pmax
500 W