EASTECH 65A20EHC20207

Full-range

2.5″ / 64 mm
Nominal diameter
146 Hz
Resonance
0.68
Q factor
82 dB
Sensitivity
± 0.9 mm
Linear excursion
6 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
82.4
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
146
Hz
Mechanical quality factor
QMS
7.74
Electrical quality factor
QES
0.75
Total quality factor
QTS
0.68

Large signal parameters

Maximum linear excursion
xmax
0.9
mm
Air volume displaced at xmax
VD
1.7
cm³
Power handling
P
3
W
Program power
Pmax
6
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.6
Ω
Inductance (1kHz)
LE
0.14
mH
VC Diameter
20
mm
Winding height
HVC
5.8
mm
Winding material
EISVW
Former material
Kapton

Magnet

Force factor
Bl
3.24
N/A
Motor constant
Bl/√RE
1.71
N/√W
Air gap height
HAG
4
mm
Material
Neodymium

Diaphragm

Effective diameter
49
mm
Effective area
SD
19
cm²
Moving mass
MMS
2.4
g
Moving mass (without air load)
MMD
2.3
g
Material
Paper

Suspensions

Stiffness
KMS
2.0
N/mm
Compliance
CMS
499
µm/N
Equivalent volume to the compliance
VAS
0.259
L
Mechanical resistance
RMS
0.283
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
2.5
64
mm
Net weight
0.087
kg
Frame material
Steel
EASTECH 65A20EHC20207 SPL & Impedance
EASTECH 65A20EHC20207 Dimensions

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