8″ / 223 mm
Nominal diameter
37 Hz
Resonance
0.35
Q factor
89 dB
Sensitivity
± 6 mm
Linear excursion
120 W
Program Power
Discontinued
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.2
dB
Frequency response
35 - 5500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
37.0
Hz
Mechanical quality factor
QMS
1.73
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.35
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
120
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.45
mH
VC Diameter
39
mm
Magnet
Force factor
Bl
6.1
N/A
Motor constant
Bl/√RE
3.46
N/√W
Material
Ferrite
Diaphragm
Effective diameter
165
mm
Effective area
SD
214
cm²
Moving mass
MMS
22.8
g
Moving mass (without air load)
MMD
20.4
g
Material
Paper / Kevlar
Suspensions
Stiffness
KMS
1.24
N/mm
Compliance
CMS
810
µm/N
Equivalent volume to the compliance
VAS
52.1
L
Mechanical resistance
RMS
3.06
N·s/m
Surround material
Rubber
Dimensions
Nominal diameter
8
″
223
mm
Overall diameter
223
mm
Baffle cutout diameter
209
mm
Overall depth
84
mm
Volume occupied by the driver (estimated)
0.76
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 RS225P-4
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8″Woofer
fS
38 Hz
SD
214 cm²
35 - 5500 Hz
QTS
0.38
xmax
6.0 mm
SPL1W
89 dB
Bl/√RE
3.52
Pmax
120 W
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8″Woofer
fS
36 Hz
SD
227 cm²
40 - 12500 Hz
QTS
0.39
xmax
10.4 mm
SPL1W
88 dB
Bl/√RE
4.42
Pmax
250 W
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