Fountek FR88
Full-range
3.5″ / 88 mm
Nominal diameter
105 Hz
Resonance
0.6
Q factor
84 dB
Sensitivity
± 1 mm
Linear excursion
30 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
84.2
dB
Frequency response
100 - 25000
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
105
Hz
Mechanical quality factor
QMS
2.57
Electrical quality factor
QES
0.78
Total quality factor
QTS
0.60
Large signal parameters
Maximum linear excursion
xmax
1.0
mm
Air volume displaced at xmax
VD
2.7
cm³
Power handling
P
15
W
Program power
Pmax
30
W
Voice Coil
Nominal impedance
Z
8
Ω
DC resistance
RE
6.3
Ω
Inductance (1kHz)
LE
0.05
mH
VC Diameter
25
mm
Winding height
HVC
5.2
mm
Winding material
Copper Clad Aluminium
Former material
Aluminum
Magnet
Flux density
B
1.03
T
Force factor
Bl
3.11
N/A
Motor constant
Bl/√RE
1.24
N/√W
Air gap height
HAG
3
mm
Material
Ferrite
Diaphragm
Effective diameter
59
mm
Effective area
SD
27
cm²
Moving mass
MMS
2
g
Moving mass (without air load)
MMD
1.9
g
Suspensions
Stiffness
KMS
0.89
N/mm
Compliance
CMS
1127
µm/N
Equivalent volume to the compliance
VAS
1.2
L
Mechanical resistance
RMS
0.51
N·s/m
Dimensions
Nominal diameter
3.5
″
88
mm
Overall diameter
88
mm
Overall depth
52
mm
Volume occupied by the driver (estimated)
0.14
L
Net weight
0.58
kg
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Export this driver to a simulation software:
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SpeakerbenchSimilar speaker drivers to Fountek FR88
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4″Woofer
fS
108 Hz
SD
44 cm²
110 - 10000 Hz
QTS
0.63
xmax
2.4 mm
SPL1W
85 dB
Bl/√RE
2.08
Pmax
120 W
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Focal 3.5 WM4 Ω
3.5″Mid-range
fS
105 Hz
SD
39 cm²
200 - 10000 Hz
QTS
0.58
xmax
2.5 mm
SPL1W
84 dB
Bl/√RE
1.7
Pmax
100 W
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3″Woofer
fS
109 Hz
SD
33 cm²
100 - 2000 Hz
QTS
0.61
xmax
3.3 mm
SPL1W
84 dB
Bl/√RE
1.89
Pmax
60 W