5.25″ / 145 mm
Nominal diameter
52 Hz
Resonance
0.35
Q factor
88 dB
Sensitivity
± 2.5 mm
Linear excursion
60 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.7
dB
Frequency response
55 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
51.8
Hz
Mechanical quality factor
QMS
1.86
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.35
Large signal parameters
Maximum linear excursion
xmax
2.5
mm
Air volume displaced at xmax
VD
23
cm³
Power handling
P
30
W
Program power
Pmax
60
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
0.5
mH
VC Diameter
25
mm
Winding material
Copper
Former material
Aluminum
Magnet
Force factor
Bl
4.8
N/A
Motor constant
Bl/√RE
2.55
N/√W
Material
Ferrite
Diaphragm
Effective diameter
109
mm
Effective area
SD
93
cm²
Moving mass
MMS
8.8
g
Moving mass (without air load)
MMD
8.1
g
Material
Coated Paper
Suspensions
Stiffness
KMS
0.93
N/mm
Compliance
CMS
1080
µm/N
Equivalent volume to the compliance
VAS
13.2
L
Mechanical resistance
RMS
1.54
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
5.25
″
145
mm
Overall diameter
145
mm
Baffle cutout diameter
120
mm
Overall depth
77
mm
Volume occupied by the driver (estimated)
0.38
L
Frame material
Steel
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SpeakerbenchSimilar woofers to Dayton Audio DC130BS-4
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5.25″Woofer
fS
52 Hz
SD
92 cm²
50 - 5000 Hz
QTS
0.35
xmax
2.5 mm
SPL1W
88 dB
Bl/√RE
2.73
Pmax
80 W
.jpg.webp)
5.25″Woofer
fS
53 Hz
SD
92 cm²
50 - 5000 Hz
QTS
0.38
xmax
2.5 mm
SPL1W
87 dB
Bl/√RE
2.49
Pmax
80 W
.jpg.webp)
5.25″Woofer
fS
51 Hz
SD
92 cm²
55 - 4000 Hz
QTS
0.39
xmax
2.5 mm
SPL1W
87 dB
Bl/√RE
2.37
Pmax
60 W