7″ / 181 mm
Nominal diameter
38 Hz
Resonance
0.39
Q factor
86 dB
Sensitivity
± 6 mm
Linear excursion
90 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.2
dB
Frequency response
35 - 8000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.7
Hz
Mechanical quality factor
QMS
1.98
Electrical quality factor
QES
0.48
Total quality factor
QTS
0.39
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
76
cm³
Power handling
P
60
W
Program power
Pmax
90
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.47
mH
VC Diameter
39
mm
Magnet
Force factor
Bl
4.67
N/A
Motor constant
Bl/√RE
2.65
N/√W
Material
Ferrite
Diaphragm
Effective diameter
127
mm
Effective area
SD
127
cm²
Moving mass
MMS
14.8
g
Moving mass (without air load)
MMD
13.7
g
Material
Paper / Kevlar
Suspensions
Stiffness
KMS
0.83
N/mm
Compliance
CMS
1210
µm/N
Equivalent volume to the compliance
VAS
27.3
L
Mechanical resistance
RMS
1.77
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
7
″
181
mm
Overall diameter
181
mm
Baffle cutout diameter
146
mm
Overall depth
81
mm
Volume occupied by the driver (estimated)
0.55
L
Frame material
Cast Aluminium
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Export this driver to a simulation software:
WinISD
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QSpeakers
SpeakerSim
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SpeakerbenchSimilar woofers to Dayton Audio RS180P-4
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6″Mid Bass
fS
36 Hz
SD
118 cm²
QTS
0.37
xmax
5.5 mm
SPL1W
87 dB
Bl/√RE
2.78
Pmax
120 W