Dayton Audio CF120-4
Woofer
4.5″ / 124 mm
Nominal diameter
53 Hz
Resonance
0.28
Q factor
85 dB
Sensitivity
± 3.5 mm
Linear excursion
60 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.2
dB
Frequency response
50 - 15000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
53.2
Hz
Mechanical quality factor
QMS
1.89
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.28
Large signal parameters
Maximum linear excursion
xmax
3.5
mm
Air volume displaced at xmax
VD
18
cm³
Power handling
P
30
W
Program power
Pmax
60
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz)
LE
0.45
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
4.94
N/A
Motor constant
Bl/√RE
2.68
N/√W
Diaphragm
Effective diameter
81
mm
Effective area
SD
52
cm²
Moving mass
MMS
6.9
g
Moving mass (without air load)
MMD
6.6
g
Suspensions
Stiffness
KMS
0.76
N/mm
Compliance
CMS
1310
µm/N
Equivalent volume to the compliance
VAS
4.87
L
Mechanical resistance
RMS
1.22
N·s/m
Dimensions
Nominal diameter
4.5
″
124
mm
Overall diameter
124
mm
Baffle cutout diameter
102
mm
Overall depth
59
mm
Volume occupied by the driver (estimated)
0.22
L
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Export this driver to a simulation software:
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SpeakerbenchSimilar woofers to Dayton Audio CF120-4
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4.5″Woofer
fS
50 Hz
SD
50 cm²
55 - 3500 Hz
QTS
0.29
xmax
3.0 mm
SPL1W
85 dB
Bl/√RE
2.6
Pmax
200 W
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