Peerless PLS-65F25AL04-04

Full-range

2.5″ / 64 mm
Nominal diameter
120 Hz
Resonance
0.78
Q factor
81 dB
Sensitivity
± 2.65 mm
Linear excursion
50 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
81.4
dB
Frequency response
100 - 10000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
120
Hz
Mechanical quality factor
QMS
5.06
Electrical quality factor
QES
0.92
Total quality factor
QTS
0.78

Large signal parameters

Maximum linear excursion
xmax
2.65
mm
Air volume displaced at xmax
VD
5.6
cm³
Power handling
P
25
W
Program power
Pmax
50
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.5
Ω
Inductance (1kHz)
LE
0.05
mH
VC Diameter
26
mm

Magnet

Force factor
Bl
2.47
N/A
Motor constant
Bl/√RE
1.32
N/√W
Air gap height
HAG
3
mm
Material
Ferrite

Diaphragm

Effective diameter
52
mm
Effective area
SD
21
cm²
Moving mass
MMS
2.2
g
Moving mass (without air load)
MMD
2.2
g
Material
Aluminum

Suspensions

Stiffness
KMS
1.19
N/mm
Compliance
CMS
840
µm/N
Equivalent volume to the compliance
VAS
0.537
L
Mechanical resistance
RMS
0.33
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
2.5
64
mm
Volume occupied by the driver (estimated)
0.12
L
Net weight
0.328
kg
Frame material
Pressed Steel
Peerless PLS-65F25AL04-04 SPL & Impedance
Peerless PLS-65F25AL04-04 Dimensions

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fS
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SD
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80 - 16000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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Pmax
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