MONACOR SPH-250TC
Subwoofer
10″ / 258 mm
Nominal diameter
26 Hz
Resonance
0.25
Q factor
91 dB
Sensitivity
± 4.5 mm
Linear excursion
300 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.6
dB
Frequency response
26 - 3500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
26.0
Hz
Mechanical quality factor
QMS
3.31
Electrical quality factor
QES
0.27
Total quality factor
QTS
0.25
Large signal parameters
Maximum linear excursion
xmax
4.5
mm
Air volume displaced at xmax
VD
156
cm³
Power handling
P
200
W
Program power
Pmax
300
W
Voice Coil
Nominal impedance
Z
2 x 8
Ω
DC resistance (in series)
RE
13.6
Ω
Inductance (1kHz, in series)
LE
4.4
mH
VC Diameter
50
mm
Winding material
Kapton
Magnet
Force factor (in series)
Bl
22.2
N/A
Motor constant
Bl/√RE
6.02
N/√W
Diameter
145
mm
Weight
1.2
kg
Diaphragm
Effective diameter
210
mm
Effective area
SD
346
cm²
Moving mass
MMS
55
g
Moving mass (without air load)
MMD
50.3
g
Suspensions
Stiffness
KMS
2.0
N/mm
Compliance
CMS
500
µm/N
Equivalent volume to the compliance
VAS
84
L
Mechanical resistance
RMS
2.71
N·s/m
Dimensions
Nominal diameter
10
″
258
mm
Overall diameter
258
mm
Baffle cutout diameter
232
mm
Overall depth
128
mm
Flange thickness
9
mm
Mounting depth
119
mm
Volume occupied by the driver (estimated)
1.6
L
Net weight
3.7
kg
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