Hertz MPK 165.3 PRO
2 Way Kit
6.5″ / 165 mm
Nominal diameter
70 Hz
Resonance
0.58
Q factor
88 dB
Sensitivity
± 4 mm
Linear excursion
220 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.4
dB
Frequency response
40 - 22500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
70.0
Hz
Mechanical quality factor
QMS
4.60
Electrical quality factor
QES
0.67
Total quality factor
QTS
0.58
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
55
cm³
Power handling
P
110
W
Program power
Pmax
220
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.3
mH
VC Diameter
25
mm
Magnet
Force factor
Bl
5.5
N/A
Motor constant
Bl/√RE
3.12
N/√W
Material
High density flux ferrite
Diaphragm
Effective diameter
132
mm
Effective area
SD
136
cm²
Moving mass
MMS
14.9
g
Moving mass (without air load)
MMD
13.7
g
Material
Pressed-pulp cone with cotton fibers
Suspensions
Stiffness
KMS
2.78
N/mm
Compliance
CMS
360
µm/N
Equivalent volume to the compliance
VAS
9.5
L
Mechanical resistance
RMS
1.42
N·s/m
Dimensions
Nominal diameter
6.5
″
165
mm
Volume occupied by the driver (estimated)
0.5
L
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SpeakerbenchSimilar woofers to Hertz MPK 165.3 PRO
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6.5″Woofer
fS
70 Hz
SD
136 cm²
40 - 5000 Hz
QTS
0.58
xmax
4.0 mm
SPL1W
88 dB
Bl/√RE
3.12
Pmax
180 W
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6.5″2 way kit
fS
67 Hz
SD
129 cm²
60 - 22000 Hz
QTS
0.55
xmax
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SPL1W
89 dB
Bl/√RE
3.13
Pmax
200 W
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6.5″2 way
fS
65 Hz
SD
129 cm²
60 - 22000 Hz
QTS
0.55
xmax
4.5 mm
SPL1W
88 dB
Bl/√RE
3.06
Pmax
160 W