SUPRAVOX 285 GMF
Mid Bass
12″ / 285 mm
Nominal diameter
47 Hz
Resonance
0.38
Q factor
101 dB
Sensitivity
± 4 mm
Linear excursion
140 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
101.1
dB
Frequency response
40 - 7000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
47.0
Hz
Mechanical quality factor
QMS
8.00
Electrical quality factor
QES
0.39
Total quality factor
QTS
0.38
Large signal parameters
Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
188
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
0.55
mH
Magnet
Flux density
B
1.4
T
Force factor
Bl
10.7
N/A
Motor constant
Bl/√RE
4.2
N/√W
Diameter
120
mm
Diaphragm
Effective diameter
245
mm
Effective area
SD
471
cm²
Moving mass
MMS
20
g
Moving mass (without air load)
MMD
12.8
g
Suspensions
Stiffness
KMS
1.67
N/mm
Compliance
CMS
600
µm/N
Equivalent volume to the compliance
VAS
150
L
Mechanical resistance
RMS
0.74
N·s/m
Surround material
Paper
Dimensions
Nominal diameter
12
″
285
mm
Overall diameter
290
mm
Baffle cutout diameter
280
mm
Overall depth
128
mm
Flange thickness
8
mm
Mounting depth
120
mm
Volume occupied by the driver (estimated)
1.9
L
Frame material
Aluminium
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15″Low frequency
fS
44 Hz
SD
855 cm²
40 - 3000 Hz
QTS
0.33
xmax
6.5 mm
SPL1W
98 dB
Bl/√RE
7.27
Pmax
800 W
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15″Low frequency
fS
42 Hz
SD
881 cm²
40 - 4000 Hz
QTS
0.36
xmax
4.8 mm
SPL1W
98 dB
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7.49
Pmax
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fS
47 Hz
SD
856 cm²
46 - 4000 Hz
QTS
0.38
xmax
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SPL1W
97 dB
Bl/√RE
7.26
Pmax
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