Celestion TF0818

Low frequency

8″ / 203 mm
Nominal diameter
100 Hz
Resonance
0.43
Q factor
94 dB
Sensitivity
± 5 mm
Linear excursion
200 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
94.2
dB
Frequency response
70 - 6000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
100
Hz
Mechanical quality factor
QMS
3.31
Electrical quality factor
QES
0.49
Total quality factor
QTS
0.43

Large signal parameters

Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
114
cm³
Power handling
P
100
W
Program power
Pmax
200
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.7
Ω
Inductance (1kHz)
LE
0.75
mH
VC Diameter
44
mm
Winding height
HVC
13
mm
Winding material
Round copper
Former material
Polyimide

Magnet

Force factor
Bl
12.95
N/A
Motor constant
Bl/√RE
5.0
N/√W
Air gap height
HAG
6
mm
Weight
0.88
kg
Material
Ferrite

Diaphragm

Effective diameter
170
mm
Effective area
SD
227
cm²
Moving mass
MMS
19.6
g
Moving mass (without air load)
MMD
17.1
g
Material
Kevlar loaded paper

Suspensions

Stiffness
KMS
7.69
N/mm
Compliance
CMS
130
µm/N
Equivalent volume to the compliance
VAS
9.44
L
Mechanical resistance
RMS
3.72
N·s/m
Surround material
Cloth-sealed

Dimensions

Nominal diameter
8
203
mm
Overall diameter
208
mm
Baffle cutout diameter
183
mm
Overall depth
99
mm
Volume occupied by the driver (estimated)
0.87
L
Net weight
2.3
kg
Frame material
Pressed steel
Celestion TF0818 SPL & Impedance
Celestion TF0818 Dimensions

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