Tang Band W4-654SE

Full-range

4″ / 102 mm
Nominal diameter
65 Hz
Resonance
0.43
Q factor
87 dB
Sensitivity
± 4.15 mm
Linear excursion
50 W
Program Power
Discontinued
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
87.2
dB
Frequency response
65 - 13000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
65.0
Hz
Mechanical quality factor
QMS
4.08
Electrical quality factor
QES
0.48
Total quality factor
QTS
0.43

Large signal parameters

Maximum linear excursion
xmax
4.15
mm
Air volume displaced at xmax
VD
24
cm³
Power handling
P
25
W
Program power
Pmax
50
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.0
Ω
Inductance (1kHz)
LE
0.1
mH
VC Diameter
25
mm

Magnet

Force factor
Bl
5.25
N/A
Motor constant
Bl/√RE
2.14
N/√W
Air gap height
HAG
4
mm
Material
Ferrite

Diaphragm

Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
5
g
Moving mass (without air load)
MMD
4.7
g
Material
Paper

Suspensions

Stiffness
KMS
0.96
N/mm
Compliance
CMS
1043
µm/N
Equivalent volume to the compliance
VAS
4.81
L
Mechanical resistance
RMS
0.5
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
4
102
mm
Volume occupied by the driver (estimated)
0.14
L
Tang Band W4-654SE SPL & Impedance
Tang Band W4-654SE Dimensions

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