Fountek FW100B

Mid Bass

4″ / 100 mm
Nominal diameter
77 Hz
Resonance
0.63
Q factor
83 dB
Sensitivity
± 4 mm
Linear excursion
70 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
Discard
Apply
Sensitivity (1W, 1m, infinite baffle)
SPL1W
83.2
dB
Frequency response
77 - 4500
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
77.0
Hz
Mechanical quality factor
QMS
3.09
Electrical quality factor
QES
0.79
Total quality factor
QTS
0.63

Large signal parameters

Maximum linear excursion
xmax
4.0
mm
Air volume displaced at xmax
VD
22
cm³
Power handling
P
35
W
Program power
Pmax
70
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
6.2
Ω
Inductance (1kHz, estimated)
LE
0.3
mH
VC Diameter
26
mm
Winding height
HVC
14
mm
Winding material
Copper
Former material
Aluminum

Magnet

Flux density
B
1.0
T
Force factor
Bl
5.59
N/A
Motor constant
Bl/√RE
2.24
N/√W
Air gap height
HAG
14
mm
Material
Ferrite

Diaphragm

Effective diameter
84
mm
Effective area
SD
55
cm²
Moving mass
MMS
8
g
Moving mass (without air load)
MMD
7.7
g

Suspensions

Stiffness
KMS
2.05
N/mm
Compliance
CMS
487
µm/N
Equivalent volume to the compliance
VAS
2.12
L
Mechanical resistance
RMS
1.26
N·s/m

Dimensions

Nominal diameter
4
100
mm
Overall diameter
105
mm
Overall depth
60
mm
Volume occupied by the driver (estimated)
0.22
L
Net weight
0.9
kg
Fountek FW100B SPL & Impedance
Fountek FW100B Dimensions

Export this driver to a simulation software:

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