Hertz Cento CX 690
3 Way
6x9″/ 238 mm
Nominal size
70 Hz
Resonance
0.67
Q factor
89 dB
Sensitivity
± 3.5 mm
Linear excursion
200 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
89.2
dB
Frequency response
40 - 23000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
70.0
Hz
Mechanical quality factor
QMS
3.30
Electrical quality factor
QES
0.83
Total quality factor
QTS
0.67
Large signal parameters
Maximum linear excursion
xmax
3.5
mm
Maximum excursion before damage
xlim
5.5
mm
Air volume displaced at xmax
VD
53
cm³
Power handling
P
100
W
Program power
Pmax
200
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
0.2
mH
VC Diameter
30
mm
Magnet
Force factor
Bl
4.9
N/A
Motor constant
Bl/√RE
2.7
N/√W
Diameter
100
mm
Material
High density flux ferrite
Diaphragm
Effective diameter
139
mm
Effective area
SD
152
cm²
Moving mass
MMS
13
g
Moving mass (without air load)
MMD
11.4
g
Material
Semi-pressed paper + Mica
Suspensions
Stiffness
KMS
2.94
N/mm
Compliance
CMS
340
µm/N
Equivalent volume to the compliance
VAS
11.1
L
Mechanical resistance
RMS
1.73
N·s/m
Dimensions
Nominal size
6 x 9
″
238
mm
Overall diameter
238
mm
Baffle cutout diameter
224
mm
Overall depth
95
mm
Flange thickness
16
mm
Mounting depth
79
mm
Volume occupied by the driver (estimated)
0.72
L
Net weight
1.55
kg
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SpeakerbenchSimilar woofers to Hertz CX 690
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Hertz CX 5704 Ω
5 x 7″2 Way
fS
70 Hz
SD
152 cm²
55 - 22000 Hz
QTS
0.67
xmax
3.5 mm
SPL1W
89 dB
Bl/√RE
2.7
Pmax
140 W
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6″2 Way Kit
fS
70 Hz
SD
120 cm²
50 - 23000 Hz
QTS
0.62
xmax
2.7 mm
SPL1W
89 dB
Bl/√RE
2.52
Pmax
160 W
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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