5.25″ / 138 mm
Nominal diameter
57 Hz
Resonance
0.68
Q factor
85 dB
Sensitivity
± 4 mm
Linear excursion
80 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
84.7
dB
Frequency response
54 - 8000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
56.5
Hz
Mechanical quality factor
QMS
5.01
Electrical quality factor
QES
0.79
Total quality factor
QTS
0.68
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
35
cm³
Power handling
P
40
W
Program power
Pmax
80
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.8
Ω
Inductance (1kHz)
LE
1.44
mH
VC Diameter
25
mm
Winding material
Copper
Former material
Kapton® / Polyimide
Magnet
Force factor
Bl
6.05
N/A
Motor constant
Bl/√RE
2.17
N/√W
Material
Neodymium
Diaphragm
Effective diameter
105
mm
Effective area
SD
87
cm²
Moving mass
MMS
10.4
g
Moving mass (without air load)
MMD
9.8
g
Material
Black Anodized Aluminum
Suspensions
Stiffness
KMS
1.32
N/mm
Compliance
CMS
760
µm/N
Equivalent volume to the compliance
VAS
7.74
L
Mechanical resistance
RMS
0.74
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
5.25
″
138
mm
Overall diameter
138
mm
Baffle cutout diameter
120
mm
Overall depth
71
mm
Volume occupied by the driver (estimated)
0.32
L
Frame material
Steel
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar speaker drivers to Dayton Audio ND140-8
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5.25″Mid Bass
fS
59 Hz
SD
87 cm²
54 - 8000 Hz
QTS
0.63
xmax
4.0 mm
SPL1W
85 dB
Bl/√RE
2.03
Pmax
80 W
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6.5″Woofer
fS
54 Hz
SD
136 cm²
29 - 4800 Hz
QTS
0.57
xmax
2.5 mm
SPL1W
86 dB
Bl/√RE
3.02
Pmax
170 W
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5″Mid Bass
fS
46 Hz
SD
94 cm²
46 - 10000 Hz
QTS
0.69
xmax
1.8 mm
SPL1W
84 dB
Bl/√RE
2.08
Pmax
60 W