Fountek FW322 4ohm

Subwoofer

12″ / 322 mm
Nominal diameter
42 Hz
Resonance
0.36
Q factor
90 dB
Sensitivity
± 10 mm
Linear excursion
600 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
90.0
dB
Frequency response
40 - 900
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
41.8
Hz
Mechanical quality factor
QMS
2.21
Electrical quality factor
QES
0.43
Total quality factor
QTS
0.36

Large signal parameters

Maximum linear excursion
xmax
10.0
mm
Air volume displaced at xmax
VD
515
cm³
Power handling
P
300
W
Program power
Pmax
600
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz, estimated)
LE
0.93
mH
VC Diameter
75
mm
Winding height
HVC
28
mm
Winding material
Copper

Magnet

Flux density
B
1.0
T
Force factor
Bl
17.0
N/A
Motor constant
Bl/√RE
9.22
N/√W
Air gap height
HAG
8
mm
Material
Ferrite

Diaphragm

Effective diameter
256
mm
Effective area
SD
515
cm²
Moving mass
MMS
133.8
g
Moving mass (without air load)
MMD
125.3
g

Suspensions

Stiffness
KMS
9.26
N/mm
Compliance
CMS
108
µm/N
Equivalent volume to the compliance
VAS
40.6
L
Mechanical resistance
RMS
15.88
N·s/m

Dimensions

Nominal diameter
12
322
mm
Overall diameter
317
mm
Overall depth
152
mm
Volume occupied by the driver (estimated)
3.2
L
Net weight
7.4
kg
Fountek FW322 4ohm SPL & Impedance
Fountek FW322 4ohm Dimensions

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