8″ / 223 mm
Nominal diameter
33 Hz
Resonance
0.41
Q factor
87 dB
Sensitivity
± 6 mm
Linear excursion
160 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.6
dB
Frequency response
35 - 2300
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
33.0
Hz
Mechanical quality factor
QMS
2.02
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.41
Large signal parameters
Maximum linear excursion
xmax
6.0
mm
Air volume displaced at xmax
VD
128
cm³
Power handling
P
80
W
Program power
Pmax
160
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz)
LE
0.49
mH
VC Diameter
38
mm
Winding material
Copper
Former material
Aluminum
Magnet
Force factor
Bl
6.38
N/A
Motor constant
Bl/√RE
3.57
N/√W
Material
Ferrite
Diaphragm
Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
32.2
g
Moving mass (without air load)
MMD
29.8
g
Material
Black Anodized Aluminum
Suspensions
Stiffness
KMS
1.39
N/mm
Compliance
CMS
720
µm/N
Equivalent volume to the compliance
VAS
46.4
L
Mechanical resistance
RMS
3.31
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
8
″
223
mm
Overall diameter
223
mm
Baffle cutout diameter
184
mm
Overall depth
92
mm
Volume occupied by the driver (estimated)
0.86
L
Frame material
Cast Aluminium
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Export this driver to a simulation software:
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
SpeakerbenchSimilar woofers to Dayton Audio RS225-4
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6.5″Mid Bass
fS
35 Hz
SD
154 cm²
QTS
0.39
xmax
9.0 mm
SPL1W
87 dB
Bl/√RE
3.03
Pmax
150 W
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9″Woofer
fS
33 Hz
SD
213 cm²
32 - 2000 Hz
QTS
0.39
xmax
6.5 mm
SPL1W
88 dB
Bl/√RE
4.18
Pmax
300 W
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8″Woofer
fS
35 Hz
SD
211 cm²
35 - 8000 Hz
QTS
0.37
xmax
5.3 mm
SPL1W
88 dB
Bl/√RE
3.83
Pmax
120 W