Dayton Audio Reference RS125-8
Woofer
5″ / 126 mm
Nominal diameter
59 Hz
Resonance
0.34
Q factor
85 dB
Sensitivity
± 4 mm
Linear excursion
60 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
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.4
dB
Frequency response
65 - 5400
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
59.2
Hz
Mechanical quality factor
QMS
1.74
Electrical quality factor
QES
0.42
Total quality factor
QTS
0.34
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
21
cm³
Power handling
P
30
W
Program power
Pmax
60
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz)
LE
0.57
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
5.69
N/A
Motor constant
Bl/√RE
2.29
N/√W
Diaphragm
Effective diameter
82
mm
Effective area
SD
53
cm²
Moving mass
MMS
5.9
g
Moving mass (without air load)
MMD
5.6
g
Material
Black Anodized Aluminum
Suspensions
Stiffness
KMS
0.82
N/mm
Compliance
CMS
1220
µm/N
Equivalent volume to the compliance
VAS
4.77
L
Mechanical resistance
RMS
1.26
N·s/m
Dimensions
Nominal diameter
5
″
126
mm
Overall diameter
126
mm
Baffle cutout diameter
94
mm
Overall depth
55
mm
Volume occupied by the driver (estimated)
0.2
L
Frame material
Cast Aluminium
Similar woofers to Dayton Audio RS125-8
4″Coaxial
fS
58 Hz
SD
45 cm²
QTS
0.33
xmax
5.0 mm
SPL1W
86 dB
Bl/√RE
2.16
Pmax
60 W
4.5″Woofer
fS
60 Hz
SD
50 cm²
60 - 3500 Hz
QTS
0.36
xmax
3.0 mm
SPL1W
85 dB
Bl/√RE
2.35
Pmax
200 W
4″Mid Bass
fS
53 Hz
SD
50 cm²
QTS
0.31
xmax
5.0 mm
SPL1W
86 dB
Bl/√RE
2.47
Pmax
60 W