EASTECH 65A20EHC19267

Full-range

2.5″ / 64 mm
Nominal diameter
187 Hz
Resonance
1.04
Q factor
84 dB
Sensitivity
± 0.3 mm
Linear excursion
25 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
84.2
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
187
Hz
Mechanical quality factor
QMS
6.18
Electrical quality factor
QES
1.25
Total quality factor
QTS
1.04

Large signal parameters

Maximum linear excursion
xmax
0.3
mm
Air volume displaced at xmax
VD
0.6
cm³
Power handling
P
20
W
Program power
Pmax
25
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
7.1
Ω
Inductance (1kHz)
LE
0.14
mH
VC Diameter
20
mm
Winding height
HVC
4.6
mm
Winding material
Copper Clad Aluminium
Former material
Kapton

Magnet

Force factor
Bl
3.42
N/A
Motor constant
Bl/√RE
1.28
N/√W
Air gap height
HAG
4
mm
Material
Neodymium

Diaphragm

Effective diameter
51
mm
Effective area
SD
20
cm²
Moving mass
MMS
1.8
g
Moving mass (without air load)
MMD
1.7
g
Material
Paper

Suspensions

Stiffness
KMS
2.46
N/mm
Compliance
CMS
406
µm/N
Equivalent volume to the compliance
VAS
0.23
L
Mechanical resistance
RMS
0.34
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
2.5
64
mm
Net weight
0.085
kg
Frame material
Steel
EASTECH 65A20EHC19267 SPL & Impedance
EASTECH 65A20EHC19267 Dimensions

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fS
185 Hz
SD
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180 - 20000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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Pmax
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