Celestion TF1220
Low frequency
12″ / 305 mm
Nominal diameter
56 Hz
Resonance
0.39
Q factor
96 dB
Sensitivity
± 4 mm
Linear excursion
300 W
Program Power
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Parts Express
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.9
dB
Frequency response
60 - 4000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
55.8
Hz
Mechanical quality factor
QMS
3.33
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.39
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
212
cm³
Power handling
P
150
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.5
Ω
Inductance (1kHz)
LE
0.71
mH
VC Diameter
50
mm
Winding height
HVC
12
mm
Winding material
Round copper
Former material
Polyimide
Magnet
Force factor
Bl
13.91
N/A
Motor constant
Bl/√RE
5.95
N/√W
Air gap height
HAG
8
mm
Weight
1.2
kg
Material
Ferrite
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
44.5
g
Moving mass (without air load)
MMD
35.9
g
Material
Kevlar loaded paper
Suspensions
Stiffness
KMS
5.56
N/mm
Compliance
CMS
180
µm/N
Equivalent volume to the compliance
VAS
72.8
L
Mechanical resistance
RMS
4.69
N·s/m
Surround material
Cloth-sealed
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
309
mm
Baffle cutout diameter
283
mm
Overall depth
131
mm
Volume occupied by the driver (estimated)
1.9
L
Net weight
4.0
kg
Frame material
Pressed steel
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SpeakerbenchSimilar speaker drivers to Celestion TF1220
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12″Full-range
fS
56 Hz
SD
531 cm²
50 - 10000 Hz
QTS
0.40
xmax
3.0 mm
SPL1W
96 dB
Bl/√RE
5.79
Pmax
200 W
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12″Coaxial
fS
58 Hz
SD
515 cm²
60 - 16000 Hz
QTS
0.37
xmax
4.3 mm
SPL1W
96 dB
Bl/√RE
6.1
Pmax
600 W
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12″Full-range
fS
57 Hz
SD
499 cm²
60 - 10000 Hz
QTS
0.38
xmax
3.0 mm
SPL1W
97 dB
Bl/√RE
6.08
Pmax
300 W