SUPRAVOX 285 EXC
Mid Bass
12″ / 285 mm
Nominal diameter
50 Hz
Resonance
0.31
Q factor
102 dB
Sensitivity
± 4 mm
Linear excursion
140 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
102.4
dB
Frequency response
50 - 7000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
50.0
Hz
Mechanical quality factor
QMS
9.33
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.31
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
190
cm³
Power handling
P
70
W
Program power
Pmax
140
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.5
Ω
Inductance (1kHz, estimated)
LE
0.53
mH
Magnet
Force factor
Bl
11.1
N/A
Motor constant
Bl/√RE
4.35
N/√W
Material
Electromagnet
Diaphragm
Effective diameter
246
mm
Effective area
SD
474
cm²
Moving mass
MMS
18.5
g
Moving mass (without air load)
MMD
11.3
g
Suspensions
Stiffness
KMS
2.04
N/mm
Compliance
CMS
490
µm/N
Equivalent volume to the compliance
VAS
156
L
Mechanical resistance
RMS
0.62
N·s/m
Surround material
Paper
Dimensions
Nominal diameter
12
″
285
mm
Overall diameter
290
mm
Baffle cutout diameter
280
mm
Overall depth
180
mm
Flange thickness
8
mm
Mounting depth
172
mm
Volume occupied by the driver (estimated)
3.0
L
Frame material
Aluminium
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SD
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45 - 4000 Hz
QTS
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SPL1W
101 dB
Bl/√RE
7.23
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fS
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SD
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41 Hz
SD
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50 - 16000 Hz
QTS
0.30
xmax
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SPL1W
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Bl/√RE
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