MONACOR SPH-255
Woofer
10″ / 257 mm
Nominal diameter
23 Hz
Resonance
0.24
Q factor
91 dB
Sensitivity
± 4.5 mm
Linear excursion
120 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
90.7
dB
Frequency response
23 - 3000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
23.0
Hz
Mechanical quality factor
QMS
2.86
Electrical quality factor
QES
0.26
Total quality factor
QTS
0.24
Large signal parameters
Maximum linear excursion
xmax
4.5
mm
Air volume displaced at xmax
VD
158
cm³
Power handling
P
60
W
Program power
Pmax
120
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.1
Ω
Inductance (1kHz)
LE
1.5
mH
VC Diameter
50
mm
Winding material
Aluminium
Magnet
Force factor
Bl
11.7
N/A
Motor constant
Bl/√RE
4.74
N/√W
Diameter
140
mm
Weight
1.1
kg
Diaphragm
Effective diameter
211
mm
Effective area
SD
350
cm²
Moving mass
MMS
42
g
Moving mass (without air load)
MMD
37.3
g
Suspensions
Stiffness
KMS
0.84
N/mm
Compliance
CMS
1190
µm/N
Equivalent volume to the compliance
VAS
205
L
Mechanical resistance
RMS
2.12
N·s/m
Dimensions
Nominal diameter
10
″
257
mm
Overall diameter
257
mm
Baffle cutout diameter
235
mm
Overall depth
128
mm
Flange thickness
10
mm
Mounting depth
118
mm
Volume occupied by the driver (estimated)
1.6
L
Net weight
3.73
kg
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SpeakerbenchSimilar woofers to MONACOR SPH-255
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12″Woofer
fS
25 Hz
SD
510 cm²
25 - 4000 Hz
QTS
0.28
xmax
7.5 mm
SPL1W
91 dB
Bl/√RE
7.1
Pmax
600 W
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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