Kartesian Cox120_vHP
Coaxial
4.5″ / 120 mm
Nominal diameter
68 Hz
Resonance
0.34
Q factor
86 dB
Sensitivity
± 3.5 mm
Linear excursion
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.0
dB
Frequency response
60 - 22000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
68.0
Hz
Mechanical quality factor
QMS
4.20
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
3.5
mm
Air volume displaced at xmax
VD
17
cm³
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
0.23
mH
Magnet
Force factor
Bl
5.92
N/A
Motor constant
Bl/√RE
2.57
N/√W
Diameter
90
mm
Height
28
mm
Diaphragm
Effective diameter
78
mm
Effective area
SD
48
cm²
Moving mass
MMS
5.7
g
Moving mass (without air load)
MMD
5.4
g
Suspensions
Stiffness
KMS
1.04
N/mm
Compliance
CMS
961
µm/N
Equivalent volume to the compliance
VAS
3.11
L
Mechanical resistance
RMS
0.58
N·s/m
Dimensions
Nominal diameter
4.5
″
120
mm
Overall diameter
120
mm
Baffle cutout diameter
98
mm
Overall depth
69
mm
Flange thickness
5
mm
Mounting depth
64
mm
Volume occupied by the driver (estimated)
0.25
L
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Similar speaker drivers to Kartesian Cox120_vHP
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4.5″Woofer
fS
72 Hz
SD
50 cm²
50 - 4000 Hz
QTS
0.40
xmax
3.0 mm
SPL1W
85 dB
Bl/√RE
2.49
Pmax
180 W
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