Focal K2 POWER ES 165 KX2E
2 way kit
6.5″ / 165 mm
Nominal diameter
55 Hz
Resonance
0.55
Q factor
87 dB
Sensitivity
± 5.3 mm
Linear excursion
240 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.2
dB
Frequency response
55 - 22000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
55.0
Hz
Mechanical quality factor
QMS
5.20
Electrical quality factor
QES
0.61
Total quality factor
QTS
0.55
Large signal parameters
Maximum linear excursion
xmax
5.3
mm
Air volume displaced at xmax
VD
68
cm³
Power handling
P
120
W
Program power
Pmax
240
W
Voice Coil
Nominal impedance
Z
2
Ω
DC resistance
RE
1.8
Ω
Inductance (1kHz, estimated)
LE
0.13
mH
VC Diameter
40
mm
Winding material
Copper Clad Aluminium
Former material
Kapton
Magnet
Force factor
Bl
4.0
N/A
Motor constant
Bl/√RE
2.98
N/√W
Diameter
100
mm
Height
22
mm
Diaphragm
Effective diameter
128
mm
Effective area
SD
129
cm²
Moving mass
MMS
15.3
g
Moving mass (without air load)
MMD
14.2
g
Material
K2 Sandwich
Suspensions
Stiffness
KMS
1.85
N/mm
Compliance
CMS
540
µm/N
Equivalent volume to the compliance
VAS
14
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
76
mm
Volume occupied by the driver (estimated)
0.69
L
Net weight
1.7
kg
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