Dayton Audio PSS545HE-4
Subwoofer
21″ / 545 mm
Nominal diameter
29 Hz
Resonance
0.27
Q factor
94 dB
Sensitivity
± 21 mm
Linear excursion
4000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
94.1
dB
Frequency response
18 - 600
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
28.8
Hz
Mechanical quality factor
QMS
7.28
Electrical quality factor
QES
0.28
Total quality factor
QTS
0.27
Large signal parameters
Maximum linear excursion
xmax
21.0
mm
Air volume displaced at xmax
VD
3339
cm³
Power handling
P
2000
W
Program power
Pmax
4000
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.8
Ω
Inductance (1kHz)
LE
8.2
mH
VC Diameter
127
mm
Winding material
Copper
Former material
Glass Fiber
Magnet
Force factor
Bl
35.5
N/A
Motor constant
Bl/√RE
18.2
N/√W
Material
Ferrite
Diaphragm
Effective diameter
450
mm
Effective area
SD
1590
cm²
Moving mass
MMS
511.2
g
Moving mass (without air load)
MMD
465.8
g
Material
Treated Paper
Suspensions
Stiffness
KMS
16.67
N/mm
Compliance
CMS
60
µm/N
Equivalent volume to the compliance
VAS
212
L
Mechanical resistance
RMS
12.71
N·s/m
Surround material
Cloth
Dimensions
Nominal diameter
21
″
545
mm
Overall diameter
545
mm
Baffle cutout diameter
495
mm
Overall depth
259
mm
Volume occupied by the driver (estimated)
11.0
L
Frame material
Cast Aluminium
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SD
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SD
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xmax
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