MONACOR SPH-300TC
Subwoofer
12″ / 306 mm
Nominal diameter
23 Hz
Resonance
0.24
Q factor
91 dB
Sensitivity
± 4 mm
Linear excursion
500 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
91.2
dB
Frequency response
23 - 2000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
23.0
Hz
Mechanical quality factor
QMS
3.03
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.24
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
198
cm³
Power handling
P
240
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
2 x 8
Ω
DC resistance (in series)
RE
12.8
Ω
Inductance (1kHz, in series)
LE
4.0
mH
VC Diameter
50
mm
Winding material
Aluminium
Magnet
Force factor (in series)
Bl
20.6
N/A
Motor constant
Bl/√RE
5.76
N/√W
Diameter
156
mm
Weight
1.4
kg
Diaphragm
Effective diameter
251
mm
Effective area
SD
495
cm²
Moving mass
MMS
68
g
Moving mass (without air load)
MMD
60.1
g
Suspensions
Stiffness
KMS
1.18
N/mm
Compliance
CMS
850
µm/N
Equivalent volume to the compliance
VAS
290
L
Mechanical resistance
RMS
3.24
N·s/m
Dimensions
Nominal diameter
12
″
306
mm
Overall diameter
306
mm
Baffle cutout diameter
280
mm
Overall depth
140
mm
Flange thickness
11
mm
Mounting depth
129
mm
Volume occupied by the driver (estimated)
2.1
L
Net weight
4.245
kg
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SpeakerbenchSimilar subwoofers to MONACOR SPH-300TC
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12″Woofer
fS
22 Hz
SD
508 cm²
QTS
0.28
xmax
10.0 mm
SPL1W
90 dB
Bl/√RE
6.67
Pmax
400 W
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MONACOR SPH-380TC2 x 4 Ω
15″Subwoofer
fS
22 Hz
SD
845 cm²
21 - 800 Hz
QTS
0.28
xmax
11.1 mm
SPL1W
91 dB
Bl/√RE
9.32
Pmax
800 W