Eminence TF-1250

Guitar Speaker

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
Discard
Apply
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
Winding material
Copper
Former material
Polyimide

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
Material
Ferrite

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
Surround material
Paper

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
Eminence TF-1250 SPL & Impedance

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