12″ / 305 mm
Nominal diameter
53 Hz
Resonance
0.33
Q factor
95 dB
Sensitivity
± 5.25 mm
Linear excursion
600 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
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
95.3
dB
Frequency response
50 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
52.6
Hz
Mechanical quality factor
QMS
3.51
Electrical quality factor
QES
0.37
Total quality factor
QTS
0.33
Large signal parameters
Maximum linear excursion
xmax
5.25
mm
Air volume displaced at xmax
VD
279
cm³
Power handling
P
300
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.4
Ω
Inductance (1kHz)
LE
1.32
mH
VC Diameter
64
mm
Winding height
HVC
14.5
mm
Winding material
Edgewound copper
Magnet
Force factor
Bl
17.66
N/A
Motor constant
Bl/√RE
6.97
N/√W
Air gap height
HAG
8
mm
Weight
1.4
kg
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
54
g
Moving mass (without air load)
MMD
45.4
g
Material
Kevlar loaded paper
Suspensions
Stiffness
KMS
5.88
N/mm
Compliance
CMS
170
µm/N
Equivalent volume to the compliance
VAS
67.7
L
Mechanical resistance
RMS
5.08
N·s/m
Surround material
Cloth-sealed
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
309
mm
Baffle cutout diameter
283
mm
Overall depth
139
mm
Volume occupied by the driver (estimated)
2.1
L
Net weight
4.4
kg
Frame material
Pressed steel
Similar speaker drivers to Celestion TF1225e
12″Coaxial
fS
55 Hz
SD
540 cm²
55 - 22000 Hz
QTS
0.33
xmax
3.0 mm
SPL1W
95 dB
Bl/√RE
7.14
Pmax
500 W
12″Bass Guitar Speaker
fS
50 Hz
SD
491 cm²
QTS
0.32
xmax
3.1 mm
SPL1W
96 dB
Bl/√RE
6.58
Pmax
500 W
12″Mid Bass
fS
54 Hz
SD
515 cm²
50 - 3000 Hz
QTS
0.36
xmax
6.8 mm
SPL1W
95 dB
Bl/√RE
7.25
Pmax
1200 W