Hertz Cento CX 570
2 Way
5x7″/ 221 mm
Nominal size
70 Hz
Resonance
0.67
Q factor
89 dB
Sensitivity
± 3.5 mm
Linear excursion
140 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.2
dB
Frequency response
55 - 22000
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
4.9
mm
Air volume displaced at xmax
VD
53
cm³
Power handling
P
70
W
Program power
Pmax
140
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz)
LE
0.2
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
4.9
N/A
Motor constant
Bl/√RE
2.7
N/√W
Diameter
85
mm
Material
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
5 x 7
″
221
mm
Overall diameter
221
mm
Baffle cutout diameter
182
mm
Overall depth
75
mm
Flange thickness
9
mm
Mounting depth
66
mm
Volume occupied by the driver (estimated)
0.44
L
Net weight
1.0
kg
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SpeakerbenchSimilar woofers to Hertz CX 570
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Hertz CX 6904 Ω
6 x 9″3 Way
fS
70 Hz
SD
152 cm²
40 - 23000 Hz
QTS
0.67
xmax
3.5 mm
SPL1W
89 dB
Bl/√RE
2.7
Pmax
200 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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8″Woofer
fS
75 Hz
SD
220 cm²
75 - 3000 Hz
QTS
0.57
xmax
7.0 mm
SPL1W
91 dB
Bl/√RE
4.53
Pmax
400 W