3.4″ / 85 mm
Nominal diameter
120 Hz
Resonance
0.65
Q factor
87 dB
Sensitivity
± 1.8 mm
Linear excursion
15 W
Program Power
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.6
dB
Frequency response
75 - 18000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
120
Hz
Mechanical quality factor
QMS
3.30
Electrical quality factor
QES
0.82
Total quality factor
QTS
0.65
Large signal parameters
Maximum linear excursion
xmax
1.8
mm
Air volume displaced at xmax
VD
6.7
cm³
Power handling
P
10
W
Program power
Pmax
15
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
7.2
Ω
Inductance (1kHz, estimated)
LE
0.17
mH
VC Diameter
20
mm
Winding height
HVC
6
mm
Magnet
Force factor
Bl
3.95
N/A
Motor constant
Bl/√RE
1.47
N/√W
Air gap height
HAG
2.5
mm
Diaphragm
Effective diameter
69
mm
Effective area
SD
37
cm²
Moving mass
MMS
2.4
g
Moving mass (without air load)
MMD
2.2
g
Suspensions
Stiffness
KMS
1.29
N/mm
Compliance
CMS
775
µm/N
Equivalent volume to the compliance
VAS
1.53
L
Mechanical resistance
RMS
0.55
N·s/m
Dimensions
Nominal diameter
3.4
″
85
mm
Baffle cutout diameter
80
mm
Volume occupied by the driver (estimated)
0.18
L
Net weight
0.486
kg
Similar speaker drivers to VISATON SL 87 FE - 8 Ohm
3″Full-range
fS
120 Hz
SD
33 cm²
120 - 21000 Hz
QTS
0.73
xmax
2.1 mm
SPL1W
87 dB
Bl/√RE
1.3
Pmax
60 W
3″Full-range
fS
110 Hz
SD
32 cm²
110 - 20000 Hz
QTS
0.58
xmax
1.1 mm
SPL1W
87 dB
Bl/√RE
1.44
Pmax
40 W
3″Full-range
fS
123 Hz
SD
33 cm²
120 - 21000 Hz
QTS
0.62
xmax
2.1 mm
SPL1W
88 dB
Bl/√RE
1.46
Pmax
60 W