Peerless HDS-P830870
Woofer
4″ / 102 mm
Nominal diameter
100 Hz
Resonance
0.6
Q factor
85 dB
Sensitivity
± 5 mm
Linear excursion
50 W
Program Power
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Available on (affiliate link)
Parts Express
$$
Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.2
dB
Frequency response
100 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
100
Hz
Mechanical quality factor
QMS
1.92
Electrical quality factor
QES
0.87
Total quality factor
QTS
0.60
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
28
cm³
Power handling
P
25
W
Program power
Pmax
50
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.3
Ω
Inductance (1kHz)
LE
0.2
mH
VC Diameter
26
mm
Magnet
Force factor
Bl
4.93
N/A
Motor constant
Bl/√RE
2.14
N/√W
Air gap height
HAG
6
mm
Material
Ferrite
Diaphragm
Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
6.1
g
Moving mass (without air load)
MMD
5.8
g
Material
Polypropylene
Suspensions
Stiffness
KMS
2.63
N/mm
Compliance
CMS
380
µm/N
Equivalent volume to the compliance
VAS
1.73
L
Mechanical resistance
RMS
1.99
N·s/m
Dimensions
Nominal diameter
4
″
102
mm
Volume occupied by the driver (estimated)
0.36
L
Net weight
0.92
kg
Frame material
Cast Aluminium
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fS
107 Hz
SD
39 cm²
110 - 12000 Hz
QTS
0.57
xmax
1.5 mm
SPL1W
86 dB
Bl/√RE
1.88
Pmax
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fS
110 Hz
SD
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100 - 20000 Hz
QTS
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xmax
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Bl/√RE
1.45
Pmax
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fS
102 Hz
SD
30 cm²
100 - 16000 Hz
QTS
0.56
xmax
1.5 mm
SPL1W
85 dB
Bl/√RE
1.58
Pmax
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