Micro-Precision Z 170 MK IV

Mid Bass

6.5″ / 170 mm
Nominal diameter
48 Hz
Resonance
0.79
Q factor
86 dB
Sensitivity
120 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
86.4
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
47.8
Hz
Mechanical quality factor
QMS
9.43
Electrical quality factor
QES
0.87
Total quality factor
QTS
0.79

Large signal parameters

Power handling
P
60
W
Program power
Pmax
120
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
4.2
Ω
Inductance (1kHz)
LE
0.2
mH
VC Diameter
25
mm

Magnet

Force factor
Bl
4.2
N/A
Motor constant
Bl/√RE
2.06
N/√W

Diaphragm

Effective diameter
130
mm
Effective area
SD
133
cm²
Moving mass
MMS
12.3
g
Moving mass (without air load)
MMD
11.1
g

Suspensions

Stiffness
KMS
1.11
N/mm
Compliance
CMS
899
µm/N
Equivalent volume to the compliance
VAS
22.5
L
Mechanical resistance
RMS
0.39
N·s/m

Dimensions

Nominal diameter
6.5
170
mm
Overall diameter
170
mm
Baffle cutout diameter
145
mm
Overall depth
74
mm
Flange thickness
5
mm
Mounting depth
69
mm
Volume occupied by the driver (estimated)
0.6
L
Net weight
2.1
kg
Micro-Precision Z 170 MK IV SPL

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SD
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xmax
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