Dayton Audio HTS545HE-4
Subwoofer
21″ / 545 mm
Nominal diameter
26 Hz
Resonance
0.28
Q factor
93 dB
Sensitivity
± 21 mm
Linear excursion
4000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
92.5
dB
Frequency response
18 - 500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
26.3
Hz
Mechanical quality factor
QMS
7.90
Electrical quality factor
QES
0.29
Total quality factor
QTS
0.28
Large signal parameters
Maximum linear excursion
xmax
21.0
mm
Air volume displaced at xmax
VD
3221
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
8.5
mH
VC Diameter
127
mm
Winding material
Copper
Former material
Glass Fiber
Magnet
Force factor
Bl
38.2
N/A
Motor constant
Bl/√RE
19.6
N/√W
Material
Ferrite
Diaphragm
Effective diameter
442
mm
Effective area
SD
1534
cm²
Moving mass
MMS
676
g
Moving mass (without air load)
MMD
632.4
g
Material
Treated Paper
Suspensions
Stiffness
KMS
20.0
N/mm
Compliance
CMS
50
µm/N
Equivalent volume to the compliance
VAS
179
L
Mechanical resistance
RMS
14.14
N·s/m
Surround material
Foam
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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