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
Dayton Audio CF120-4 WooferDayton Audio CF120-4 WooferDayton Audio CF120-4 Woofer
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
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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
Impedance
SPL
Dayton Audio CF120-4 Impedance
Dayton Audio CF120-4 SPL
Dayton Audio CF120-4 Dimensions
DatasheetDatasheet

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