Hertz Mille MP 70.3 PRO

Mid-range

3″ / 70 mm
Nominal diameter
110 Hz
Resonance
0.82
Q factor
84 dB
Sensitivity
± 1.5 mm
Linear excursion
100 W
Program Power
Hertz MP 70.3 PRO Mid-rangeHertz MP 70.3 PRO Mid-rangeHertz MP 70.3 PRO Mid-range
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
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
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Specifications

Sensitivity (1W, 1m, infinite baffle)
SPL1W
83.6
dB
Frequency response
180 - 18000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
110
Hz
Mechanical quality factor
QMS
4.60
Electrical quality factor
QES
1.00
Total quality factor
QTS
0.82

Large signal parameters

Maximum linear excursion
xmax
1.5
mm
Air volume displaced at xmax
VD
4.8
cm³
Power handling
P
50
W
Program power
Pmax
100
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.7
Ω
Inductance (1kHz)
LE
0.12
mH
VC Diameter
20
mm

Magnet

Force factor
Bl
2.8
N/A
Motor constant
Bl/√RE
1.46
N/√W
Diameter
20
mm
Height
2
mm
Material
Neodymium

Diaphragm

Effective diameter
65
mm
Effective area
SD
32
cm²
Moving mass
MMS
2.9
g
Moving mass (without air load)
MMD
2.8
g
Material
Pressed-pulp cone with cotton fibers

Suspensions

Stiffness
KMS
1.43
N/mm
Compliance
CMS
700
µm/N
Equivalent volume to the compliance
VAS
1
L
Mechanical resistance
RMS
0.44
N·s/m

Dimensions

Nominal diameter
3
″
70
mm
Overall diameter
88
mm
Baffle cutout diameter
73
mm
Overall depth
50
mm
Flange thickness
6
mm
Mounting depth
44
mm
Volume occupied by the driver (estimated)
0.11
L
Net weight
0.17
kg
SPL & Impedance
Hertz MP 70.3 PRO SPL & Impedance
DatasheetDatasheet

Export this driver to a simulation software:

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