Focal K2 POWER ES 165 KE

2 way kit

6.5″ / 165 mm
Nominal diameter
64 Hz
Resonance
0.62
Q factor
88 dB
Sensitivity
± 4.5 mm
Linear excursion
200 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
87.5
dB
Frequency response
60 - 22000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
64.0
Hz
Mechanical quality factor
QMS
5.70
Electrical quality factor
QES
0.69
Total quality factor
QTS
0.62

Large signal parameters

Maximum linear excursion
xmax
4.5
mm
Air volume displaced at xmax
VD
58
cm³
Power handling
P
100
W
Program power
Pmax
200
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.2
Ω
Inductance (1kHz, estimated)
LE
0.22
mH
VC Diameter
32
mm
Winding material
Copper Clad Aluminium
Former material
Kapton

Magnet

Force factor
Bl
5.2
N/A
Motor constant
Bl/√RE
2.91
N/√W
Diameter
90
mm
Height
20
mm

Diaphragm

Effective diameter
128
mm
Effective area
SD
129
cm²
Moving mass
MMS
14.5
g
Moving mass (without air load)
MMD
13.4
g
Material
K2 Sandwich

Suspensions

Stiffness
KMS
2.44
N/mm
Compliance
CMS
410
µm/N
Equivalent volume to the compliance
VAS
10
L
Mechanical resistance
RMS
1.02
N·s/m
Surround material
Butyl

Dimensions

Nominal diameter
6.5
165
mm
Overall diameter
165
mm
Baffle cutout diameter
142
mm
Mounting depth
74
mm
Volume occupied by the driver (estimated)
0.54
L
Net weight
1.35
kg
Focal ES 165 KE SPL & Impedance
Focal ES 165 KE Dimensions

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SD
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SD
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