Hertz DCX 570.3
2 Way
5x7″/ 127x178 mm
Nominal size
81 Hz
Resonance
0.82
Q factor
89 dB
Sensitivity
± 2 mm
Linear excursion
120 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
89.2
dB
Frequency response
60 - 21000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
81.0
Hz
Mechanical quality factor
QMS
4.56
Electrical quality factor
QES
1.00
Total quality factor
QTS
0.82
Large signal parameters
Maximum linear excursion
xmax
2.0
mm
Air volume displaced at xmax
VD
29
cm³
Power handling
P
60
W
Program power
Pmax
120
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.3
Ω
Inductance (1kHz, estimated)
LE
0.19
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
4.3
N/A
Motor constant
Bl/√RE
2.37
N/√W
Material
High density flux ferrite
Diaphragm
Effective diameter
136
mm
Effective area
SD
145
cm²
Moving mass
MMS
10.8
g
Moving mass (without air load)
MMD
9.9
g
Material
Water-repellent pressed paper
Suspensions
Stiffness
KMS
2.78
N/mm
Compliance
CMS
360
µm/N
Equivalent volume to the compliance
VAS
10.7
L
Mechanical resistance
RMS
1.21
N·s/m
Dimensions
Nominal size
5 x 7
″
127 x 178
mm
Volume occupied by the driver (estimated)
0.25
L
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fS
70 Hz
SD
152 cm²
55 - 22000 Hz
QTS
0.67
xmax
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SPL1W
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Bl/√RE
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Pmax
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fS
70 Hz
SD
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fS
80 Hz
SD
142 cm²
65 - 5000 Hz
QTS
0.80
xmax
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SPL1W
88 dB
Bl/√RE
2.37
Pmax
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