SUPRAVOX 215 EXC
Full-range
8″ / 215 mm
Nominal diameter
50 Hz
Resonance
0.31
Q factor
103 dB
Sensitivity
± 5 mm
Linear excursion
40 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
102.9
dB
Frequency response
50 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
50.0
Hz
Mechanical quality factor
QMS
9.23
Electrical quality factor
QES
0.32
Total quality factor
QTS
0.31
Large signal parameters
Maximum linear excursion
xmax
5.0
mm
Air volume displaced at xmax
VD
130
cm³
Power handling
P
20
W
Program power
Pmax
40
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
4.0
Ω
Inductance (1kHz, estimated)
LE
0.18
mH
Magnet
Force factor
Bl
6.23
N/A
Motor constant
Bl/√RE
3.12
N/√W
Material
Electromagnet
Diaphragm
Effective diameter
182
mm
Effective area
SD
261
cm²
Moving mass
MMS
7
g
Moving mass (without air load)
MMD
3.9
g
Suspensions
Stiffness
KMS
1.0
N/mm
Compliance
CMS
1000
µm/N
Equivalent volume to the compliance
VAS
96.5
L
Mechanical resistance
RMS
0.24
N·s/m
Surround material
Paper
Dimensions
Nominal diameter
8
″
215
mm
Overall diameter
227
mm
Baffle cutout diameter
212
mm
Overall depth
147
mm
Flange thickness
10
mm
Mounting depth
137
mm
Volume occupied by the driver (estimated)
1.6
L
Frame material
Aluminium
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fS
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SD
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40 - 5000 Hz
QTS
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SPL1W
100 dB
Bl/√RE
2.83
Pmax
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fS
50 Hz
SD
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0.31
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fS
50 Hz
SD
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50 - 7000 Hz
QTS
0.31
xmax
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SPL1W
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Bl/√RE
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