VISATON FRS 7 S - 8 Ohm
Full-range
2.5″ / 65 mm
Nominal diameter
150 Hz
Resonance
1.46
Q factor
88 dB
Sensitivity
± 1.5 mm
Linear excursion
15 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
87.9
dB
Frequency response
120 - 20000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
150
Hz
Mechanical quality factor
QMS
5.38
Electrical quality factor
QES
2.01
Total quality factor
QTS
1.46
Large signal parameters
Maximum linear excursion
xmax
1.5
mm
Maximum excursion before damage
xlim
1.5
mm
Air volume displaced at xmax
VD
3.3
cm³
Power handling
P
8
W
Program power
Pmax
15
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.2
Ω
Inductance (1kHz)
LE
0.6
mH
VC Diameter
14
mm
Winding height
HVC
5
mm
Magnet
Flux density
B
1.2
T
Force factor
Bl
1.8
N/A
Motor constant
Bl/√RE
0.671
N/√W
Air gap height
HAG
2
mm
Diaphragm
Effective diameter
53
mm
Effective area
SD
22
cm²
Moving mass
MMS
0.8
g
Moving mass (without air load)
MMD
0.7
g
Suspensions
Stiffness
KMS
0.76
N/mm
Compliance
CMS
1311
µm/N
Equivalent volume to the compliance
VAS
0.9
L
Mechanical resistance
RMS
0.14
N·s/m
Dimensions
Nominal diameter
2.5
″
65
mm
Baffle cutout diameter
61
mm
Net weight
0.2
kg
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SD
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150 - 17000 Hz
QTS
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xmax
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SPL1W
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Bl/√RE
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SD
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100 - 20000 Hz
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xmax
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SPL1W
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