Dayton Audio Reference RS180-4

Woofer

7″ / 181 mm
Nominal diameter
38 Hz
Resonance
0.46
Q factor
85 dB
Sensitivity
± 6 mm
Linear excursion
120 W
Program Power
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
Discard
Apply

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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
84.7
dB
Frequency response
39 - 3600
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
38.4
Hz
Mechanical quality factor
QMS
2.13
Electrical quality factor
QES
0.59
Total quality factor
QTS
0.46

Large signal parameters

Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
75
cm³
Power handling
P
60
W
Program power
Pmax
120
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.45
mH
VC Diameter
38
mm
Winding material
Copper
Former material
Aluminum

Magnet

Force factor
Bl
4.71
N/A
Motor constant
Bl/√RE
2.68
N/√W
Material
Ferrite

Diaphragm

Effective diameter
126
mm
Effective area
SD
125
cm²
Moving mass
MMS
17.8
g
Moving mass (without air load)
MMD
16.7
g
Material
Black Anodized Aluminum

Suspensions

Stiffness
KMS
1.03
N/mm
Compliance
CMS
970
µm/N
Equivalent volume to the compliance
VAS
21.2
L
Mechanical resistance
RMS
2.02
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
7
181
mm
Overall diameter
181
mm
Baffle cutout diameter
146
mm
Overall depth
82
mm
Volume occupied by the driver (estimated)
0.55
L
Frame material
Cast Aluminium
Dayton Audio RS180-4 Impedance
Dayton Audio RS180-4 SPL
Dayton Audio RS180-4 Dimensions

Export this driver to a simulation software:

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fS
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SD
104 cm²
45 - 2000 Hz
QTS
0.45
xmax
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SPL1W
84 dB
Bl/√RE
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Pmax
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