MONACOR SPM-116/8
Mid-range
4″ / 115 mm
Nominal diameter
75 Hz
Resonance
0.57
Q factor
87 dB
Sensitivity
± 1.5 mm
Linear excursion
80 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.5
dB
Frequency response
75 - 18000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
75.0
Hz
Mechanical quality factor
QMS
1.90
Electrical quality factor
QES
0.81
Total quality factor
QTS
0.57
Large signal parameters
Maximum linear excursion
xmax
1.5
mm
Air volume displaced at xmax
VD
8.6
cm³
Power handling
P
40
W
Program power
Pmax
80
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.2
Ω
Inductance (1kHz)
LE
0.4
mH
VC Diameter
21
mm
Winding material
Aluminium
Magnet
Force factor
Bl
4.2
N/A
Motor constant
Bl/√RE
1.57
N/√W
Diameter
70
mm
Weight
0.23
kg
Diaphragm
Effective diameter
85
mm
Effective area
SD
57
cm²
Moving mass
MMS
3.8
g
Moving mass (without air load)
MMD
3.5
g
Suspensions
Stiffness
KMS
1.02
N/mm
Compliance
CMS
980
µm/N
Equivalent volume to the compliance
VAS
4.5
L
Mechanical resistance
RMS
0.94
N·s/m
Dimensions
Nominal diameter
4
″
115
mm
Overall diameter
115
mm
Baffle cutout diameter
94
mm
Overall depth
60
mm
Flange thickness
7
mm
Mounting depth
53
mm
Volume occupied by the driver (estimated)
0.17
L
Net weight
0.557
kg
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SpeakerbenchSimilar woofers to MONACOR SPM-116/8
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5″Full-range
fS
83 Hz
SD
74 cm²
90 - 15000 Hz
QTS
0.51
xmax
2.0 mm
SPL1W
88 dB
Bl/√RE
2.42
Pmax
100 W
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5″Woofer
fS
76 Hz
SD
90 cm²
100 - 4000 Hz
QTS
0.55
xmax
6.6 mm
SPL1W
87 dB
Bl/√RE
2.61
Pmax
60 W