MONACOR SPH-145HQ
Mid-range
5.5″ / 145 mm
Nominal diameter
52 Hz
Resonance
0.44
Q factor
87 dB
Sensitivity
± 3.5 mm
Linear excursion
100 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.6
dB
Frequency response
52 - 6000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
52.0
Hz
Mechanical quality factor
QMS
3.07
Electrical quality factor
QES
0.51
Total quality factor
QTS
0.44
Large signal parameters
Maximum linear excursion
xmax
3.5
mm
Air volume displaced at xmax
VD
28
cm³
Power handling
P
50
W
Program power
Pmax
100
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
5.8
Ω
Inductance (1kHz)
LE
0.53
mH
VC Diameter
25
mm
Winding material
Aluminium
Magnet
Force factor
Bl
5.33
N/A
Motor constant
Bl/√RE
2.21
N/√W
Diameter
72
mm
Weight
0.23
kg
Diaphragm
Effective diameter
101
mm
Effective area
SD
80
cm²
Moving mass
MMS
7.6
g
Moving mass (without air load)
MMD
7
g
Suspensions
Stiffness
KMS
0.95
N/mm
Compliance
CMS
1050
µm/N
Equivalent volume to the compliance
VAS
9.4
L
Mechanical resistance
RMS
0.81
N·s/m
Dimensions
Nominal diameter
5.5
″
145
mm
Overall diameter
145
mm
Baffle cutout diameter
119
mm
Overall depth
66
mm
Flange thickness
6
mm
Mounting depth
60
mm
Volume occupied by the driver (estimated)
0.26
L
Net weight
0.739
kg
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SpeakerbenchSimilar woofers to MONACOR SPH-145HQ
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5.25″Woofer
fS
57 Hz
SD
92 cm²
55 - 4000 Hz
QTS
0.45
xmax
2.5 mm
SPL1W
86 dB
Bl/√RE
2.46
Pmax
60 W
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5″Mid-range
fS
57 Hz
SD
79 cm²
57 - 8000 Hz
QTS
0.46
xmax
3.0 mm
SPL1W
87 dB
Bl/√RE
2.41
Pmax
90 W
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5.25″Woofer
fS
53 Hz
SD
92 cm²
50 - 5000 Hz
QTS
0.41
xmax
2.5 mm
SPL1W
87 dB
Bl/√RE
2.46
Pmax
80 W