12″ / 305 mm
Nominal diameter
95 Hz
Resonance
0.88
Q factor
98 dB
Sensitivity
± 0.47 mm
Linear excursion
100 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
Sensitivity (1w, 1m, infinite baffle)
SPL1W
98.4
dB
Frequency response
80 - 4400
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
95.0
Hz
Mechanical quality factor
QMS
8.50
Electrical quality factor
QES
0.98
Total quality factor
QTS
0.88
Large signal parameters
Maximum linear excursion
xmax
0.47
mm
Air volume displaced at xmax
VD
24
cm³
Power handling
P
50
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.2
Ω
Inductance (1kHz)
LE
0.51
mH
VC Diameter
38
mm
Magnet
Force factor
Bl
11.39
N/A
Motor constant
Bl/√RE
4.24
N/√W
Air gap height
HAG
8
mm
Weight
0.85
kg
Diaphragm
Effective diameter
257
mm
Effective area
SD
520
cm²
Moving mass
MMS
29
g
Moving mass (without air load)
MMD
20.6
g
Material
Full molded paper
Suspensions
Stiffness
KMS
10.0
N/mm
Compliance
CMS
100
µm/N
Equivalent volume to the compliance
VAS
37.5
L
Mechanical resistance
RMS
2.04
N·s/m
Dimensions
Nominal diameter
12
″
305
mm
Overall diameter
309
mm
Baffle cutout diameter
283
mm
Overall depth
126
mm
Volume occupied by the driver
1.93
L
Net weight
2.99
kg
Frame material
Pressed steel
Similar speaker drivers to Eminence TF-1250
12″Guitar Speaker
fS
93 Hz
SD
491 cm²
QTS
0.88
xmax
1.0 mm
SPL1W
98 dB
Bl/√RE
4.21
Pmax
140 W
12″Guitar Speaker
fS
89 Hz
SD
520 cm²
80 - 5000 Hz
QTS
0.77
xmax
0.8 mm
SPL1W
98 dB
Bl/√RE
4.56
Pmax
240 W
12″Guitar Speaker
fS
95 Hz
SD
491 cm²
QTS
0.92
xmax
1.0 mm
SPL1W
97 dB
Bl/√RE
4.2
Pmax
200 W