Kartesian Sub120_vHE
Subwoofer
4.5″ / 120 mm
Nominal diameter
46 Hz
Resonance
0.42
Q factor
81 dB
Sensitivity
± 6.5 mm
Linear excursion
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
81.1
dB
Frequency response
45 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
46.0
Hz
Mechanical quality factor
QMS
5.40
Electrical quality factor
QES
0.45
Total quality factor
QTS
0.42
Large signal parameters
Maximum linear excursion
xmax
6.5
mm
Air volume displaced at xmax
VD
35
cm³
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.6
Ω
Inductance (1kHz)
LE
0.34
mH
Magnet
Force factor
Bl
7.3
N/A
Motor constant
Bl/√RE
2.84
N/√W
Diameter
56
mm
Height
39
mm
Diaphragm
Effective diameter
83
mm
Effective area
SD
54
cm²
Moving mass
MMS
12.6
g
Moving mass (without air load)
MMD
12.3
g
Suspensions
Stiffness
KMS
1.05
N/mm
Compliance
CMS
950
µm/N
Equivalent volume to the compliance
VAS
3.93
L
Mechanical resistance
RMS
0.67
N·s/m
Dimensions
Nominal diameter
4.5
″
120
mm
Overall diameter
120
mm
Baffle cutout diameter
98
mm
Overall depth
80
mm
Flange thickness
5
mm
Mounting depth
75
mm
Volume occupied by the driver (estimated)
0.31
L
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Similar subwoofers to Kartesian Sub120_vHE
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4.5″Woofer
fS
48 Hz
SD
50 cm²
50 - 4000 Hz
QTS
0.38
xmax
3.0 mm
SPL1W
83 dB
Bl/√RE
2.52
Pmax
300 W
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4.5″Woofer
fS
45 Hz
SD
50 cm²
60 - 3500 Hz
QTS
0.36
xmax
3.0 mm
SPL1W
83 dB
Bl/√RE
2.28
Pmax
200 W
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