Hertz HMX 8
2 Way
8″ / 200 mm
Nominal diameter
50 Hz
Resonance
0.58
Q factor
89 dB
Sensitivity
± 4.5 mm
Linear excursion
200 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.4
dB
Frequency response
45 - 25000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
50.0
Hz
Mechanical quality factor
QMS
11.00
Electrical quality factor
QES
0.61
Total quality factor
QTS
0.58
Large signal parameters
Maximum linear excursion
xmax
4.5
mm
Air volume displaced at xmax
VD
107
cm³
Power handling
P
100
W
Program power
Pmax
200
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.1
Ω
Inductance (1kHz)
LE
0.52
mH
VC Diameter
32
mm
Magnet
Force factor
Bl
6.6
N/A
Motor constant
Bl/√RE
3.75
N/√W
Material
High density flux ferrite
Diaphragm
Effective diameter
174
mm
Effective area
SD
237
cm²
Moving mass
MMS
27.3
g
Moving mass (without air load)
MMD
24.8
g
Material
Polypropylene with UV inhibitors
Suspensions
Stiffness
KMS
2.7
N/mm
Compliance
CMS
370
µm/N
Equivalent volume to the compliance
VAS
29.5
L
Mechanical resistance
RMS
0.78
N·s/m
Dimensions
Nominal diameter
8
″
200
mm
Volume occupied by the driver (estimated)
0.82
L
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8″2 Way
fS
50 Hz
SD
237 cm²
45 - 25000 Hz
QTS
0.58
xmax
4.5 mm
SPL1W
89 dB
Bl/√RE
3.75
Pmax
200 W