Focal K2 POWER ES 165 K2S
Woofer
6.5″ / 165 mm
Nominal diameter
60 Hz
Resonance
0.58
Q factor
87 dB
Sensitivity
140 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.9
dB
Frequency response
60 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
60.0
Hz
Mechanical quality factor
QMS
8.00
Electrical quality factor
QES
0.62
Total quality factor
QTS
0.58
Large signal parameters
Power handling
P
70
W
Program power
Pmax
140
W
Voice Coil
Nominal impedance
Z
2
Ω
DC resistance
RE
2.0
Ω
Inductance (1kHz, estimated)
LE
0.15
mH
VC Diameter
33
mm
Magnet
Force factor
Bl
4.5
N/A
Motor constant
Bl/√RE
3.18
N/√W
Diaphragm
Effective diameter
128
mm
Effective area
SD
129
cm²
Moving mass
MMS
17
g
Moving mass (without air load)
MMD
15.9
g
Material
K2 Sandwich
Suspensions
Stiffness
KMS
2.33
N/mm
Compliance
CMS
430
µm/N
Equivalent volume to the compliance
VAS
10
L
Mechanical resistance
RMS
0.8
N·s/m
Surround material
Butyl
Dimensions
Nominal diameter
6.5
″
165
mm
Overall diameter
165
mm
Baffle cutout diameter
142
mm
Mounting depth
58
mm
Volume occupied by the driver (estimated)
0.27
L
Net weight
0.7
kg
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Similar woofers to Focal ES 165 K2S
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6.5″Mid Bass
fS
60 Hz
SD
131 cm²
50 - 3500 Hz
QTS
0.55
xmax
3.7 mm
SPL1W
87 dB
Bl/√RE
2.82
Pmax
225 W
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6.5″2 way kit
fS
55 Hz
SD
129 cm²
55 - 22000 Hz
QTS
0.55
xmax
5.3 mm
SPL1W
87 dB
Bl/√RE
2.98
Pmax
240 W
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6.5″2 Way
fS
60 Hz
SD
133 cm²
45 - 22000 Hz
QTS
0.55
xmax
3.9 mm
SPL1W
88 dB
Bl/√RE
2.92
Pmax
285 W