Eminence LEGEND 1258

Guitar Speaker

12″ / 305 mm
Nominal diameter
94 Hz
Resonance
0.99
Q factor
96 dB
Sensitivity
± 0.48 mm
Linear excursion
150 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
95.8
dB
Frequency response
80 - 4000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
94.0
Hz
Mechanical quality factor
QMS
6.15
Electrical quality factor
QES
1.18
Total quality factor
QTS
0.99

Large signal parameters

Maximum linear excursion
xmax
0.48
mm
Air volume displaced at xmax
VD
24
cm³
Power handling
P
75
W
Program power
Pmax
150
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
7.4
Ω
Inductance (1kHz)
LE
0.7
mH
VC Diameter
38
mm
Winding material
Copper
Former material
Polyimide

Magnet

Force factor
Bl
10.9
N/A
Motor constant
Bl/√RE
4.0
N/√W
Air gap height
HAG
7.9
mm
Weight
0.964
kg
Material
Ferrite

Diaphragm

Effective diameter
254
mm
Effective area
SD
507
cm²
Moving mass
MMS
32
g
Moving mass (without air load)
MMD
23.9
g
Material
Paper

Suspensions

Stiffness
KMS
11.11
N/mm
Compliance
CMS
90
µm/N
Equivalent volume to the compliance
VAS
32.5
L
Mechanical resistance
RMS
3.07
N·s/m
Surround material
Paper

Dimensions

Nominal diameter
12
305
mm
Overall diameter
306
mm
Baffle cutout diameter
281
mm
Overall depth
125
mm
Volume occupied by the driver
1.96
L
Net weight
3.54
kg
Frame material
Pressed steel
Eminence LEGEND 1258 SPL & Impedance

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