Focal FLAX EVO Sub P 20 FE

Subwoofer

8″ / 200 mm
Nominal diameter
39 Hz
Resonance
0.56
Q factor
83 dB
Sensitivity
± 10 mm
Linear excursion
500 W
Program Power
Focal Sub P 20 FE SubwooferFocal Sub P 20 FE SubwooferFocal Sub P 20 FE Subwoofer
Excursion
Velocity
SPL
Phase
Group delay
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
82.8
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
38.5
Hz
Mechanical quality factor
QMS
5.50
Electrical quality factor
QES
0.61
Total quality factor
QTS
0.56

Large signal parameters

Maximum linear excursion
xmax
10.0
mm
Air volume displaced at xmax
VD
216
cm³
Power handling
P
250
W
Program power
Pmax
500
W

Voice Coil

Nominal impedance
Z
4
Ω
DC resistance
RE
3.4
Ω
Inductance (1kHz)
LE
1.7
mH
VC Diameter
38
mm
Winding height
HVC
28
mm
Winding material
Copper
Former material
Glass Fiber

Magnet

Flux density
B
0.75
T
Force factor
Bl
11.5
N/A
Motor constant
Bl/√RE
6.24
N/√W
Air gap height
HAG
8
mm
Diameter
120
mm
Height
32
mm

Diaphragm

Effective diameter
166
mm
Effective area
SD
216
cm²
Moving mass
MMS
95
g
Moving mass (without air load)
MMD
92.6
g
Material
Flax

Suspensions

Stiffness
KMS
5.56
N/mm
Compliance
CMS
180
µm/N
Equivalent volume to the compliance
VAS
12
L
Mechanical resistance
RMS
4.18
N·s/m
Surround material
Rubber

Dimensions

Nominal diameter
8
″
200
mm
Overall diameter
214
mm
Baffle cutout diameter
187
mm
Mounting depth
117
mm
Volume occupied by the driver (estimated)
1.4
L
Net weight
3.2
kg
Impedance
Step response
Tone Burst
Focal Sub P 20 FE Dimensions
DatasheetDatasheet

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