Peerless NE123W-04

Woofer

4″ / 102 mm
Nominal diameter
78 Hz
Resonance
0.43
Q factor
86 dB
Sensitivity
± 4.33 mm
Linear excursion
70 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

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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
85.7
dB
Frequency response
100 - 8000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
78.0
Hz
Mechanical quality factor
QMS
5.49
Electrical quality factor
QES
0.46
Total quality factor
QTS
0.43

Large signal parameters

Maximum linear excursion
xmax
4.33
mm
Air volume displaced at xmax
VD
23
cm³
Power handling
P
35
W
Program power
Pmax
70
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz)
LE
0.08
mH
VC Diameter
32
mm

Magnet

Force factor
Bl
5.09
N/A
Motor constant
Bl/√RE
2.76
N/√W
Air gap height
HAG
4
mm
Material
Neodymium

Diaphragm

Effective diameter
83
mm
Effective area
SD
54
cm²
Moving mass
MMS
7.2
g
Moving mass (without air load)
MMD
6.9
g
Material
Patented PentaCut

Suspensions

Stiffness
KMS
1.75
N/mm
Compliance
CMS
570
µm/N
Equivalent volume to the compliance
VAS
2.38
L
Mechanical resistance
RMS
0.65
N·s/m

Dimensions

Nominal diameter
4
102
mm
Volume occupied by the driver (estimated)
0.15
L
Net weight
0.413
kg
Frame material
Cast Aluminium
Peerless NE123W-04 SPL & Impedance
Peerless NE123W-04 Dimensions

Export this driver to a simulation software:

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fS
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SD
39 cm²
85 - 20000 Hz
QTS
0.45
xmax
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SPL1W
86 dB
Bl/√RE
1.8
Pmax
60 W