Celestion TFX0412

Coaxial

4″ / 100 mm
Nominal diameter
95 Hz
Resonance
0.59
Q factor
87 dB
Sensitivity
± 4 mm
Linear excursion
200 W
Program Power
Celestion TFX0412 CoaxialCelestion TFX0412 Coaxial
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
86.5
dB
Frequency response
90 - 20000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
95.0
Hz
Mechanical quality factor
QMS
5.18
Electrical quality factor
QES
0.67
Total quality factor
QTS
0.59

Large signal parameters

Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
23
cm³
Power handling
P
100
W
Program power
Pmax
200
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.6
Ω
Inductance (1kHz)
LE
0.34
mH
VC Diameter
32
mm
Winding height
HVC
11
mm
Winding material
Copper clad aluminium
Former material
Polyimide

Magnet

Force factor
Bl
5.4
N/A
Motor constant
Bl/√RE
2.28
N/√W
Air gap height
HAG
6
mm
Material
Ferrite

Diaphragm

Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
5.8
g
Moving mass (without air load)
MMD
5.4
g
Material
Reinforced cellulose, waterproof coating

Suspensions

Stiffness
KMS
2.09
N/mm
Compliance
CMS
478
µm/N
Equivalent volume to the compliance
VAS
2.18
L
Mechanical resistance
RMS
0.674
N·s/m
Surround material
Elastomer

Dimensions

Nominal diameter
4
″
100
mm
Overall diameter
126
mm
Baffle cutout diameter
102
mm
Overall depth
74
mm
Volume occupied by the driver (estimated)
0.48
L
Net weight
2.0
kg
Frame material
Pressed steel
SPL & Impedance
Celestion TFX0412 SPL & Impedance
DatasheetDatasheet

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