MONACOR SPH-450TC
Subwoofer
18″ / 460 mm
Nominal diameter
20 Hz
Resonance
0.25
Q factor
93 dB
Sensitivity
± 12.9 mm
Linear excursion
1000 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
92.5
dB
Frequency response
20 - 1500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
20.0
Hz
Mechanical quality factor
QMS
2.97
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.25
Large signal parameters
Maximum linear excursion
xmax
12.9
mm
Air volume displaced at xmax
VD
1613
cm³
Power handling
P
700
W
Program power
Pmax
1000
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
7.4
Ω
Inductance (1kHz, in series)
LE
4.6
mH
VC Diameter
99
mm
Winding material
Aluminium
Magnet
Force factor (in series)
Bl
32.4
N/A
Motor constant
Bl/√RE
11.9
N/√W
Diameter
220
mm
Weight
5.7
kg
Diaphragm
Effective diameter
399
mm
Effective area
SD
1250
cm²
Moving mass
MMS
305
g
Moving mass (without air load)
MMD
274.8
g
Suspensions
Stiffness
KMS
4.55
N/mm
Compliance
CMS
220
µm/N
Equivalent volume to the compliance
VAS
480
L
Mechanical resistance
RMS
12.9
N·s/m
Dimensions
Nominal diameter
18
″
460
mm
Overall diameter
460
mm
Baffle cutout diameter
425
mm
Overall depth
220
mm
Flange thickness
15
mm
Mounting depth
205
mm
Volume occupied by the driver (estimated)
8.8
L
Net weight
17.0
kg
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SD
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20 - 1500 Hz
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xmax
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Bl/√RE
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Pmax
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SD
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SD
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QTS
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xmax
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SPL1W
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