Focal Sub 12 Dual

Subwoofer

12″ / 324 mm
Nominal diameter
24 Hz
Resonance
0.57
Q factor
86 dB
Sensitivity
600 W
Program Power
Focal Sub 12 Dual SubwooferFocal Sub 12 Dual SubwooferFocal Sub 12 Dual 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
85.5
dB

Thiele & Small parameters

Resonance frequency (free air)
fS
24.0
Hz
Mechanical quality factor
QMS
5.34
Electrical quality factor
QES
0.64
Total quality factor
QTS
0.57

Large signal parameters

Power handling
P
300
W
Program power
Pmax
600
W

Voice Coil

Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
7.0
Ω
Inductance (1kHz, in series, estimated)
LE
2.06
mH
VC Diameter
50
mm

Magnet

Force factor (in series)
Bl
17.0
N/A
Motor constant
Bl/√RE
6.43
N/√W
Diameter
145
mm

Diaphragm

Effective diameter
245
mm
Effective area
SD
471
cm²
Moving mass
MMS
150
g
Moving mass (without air load)
MMD
142.2
g
Material
Polypropylene

Suspensions

Stiffness
KMS
3.85
N/mm
Compliance
CMS
260
µm/N
Equivalent volume to the compliance
VAS
81
L
Mechanical resistance
RMS
4.24
N·s/m
Surround material
Butyl

Dimensions

Nominal diameter
12
″
324
mm
Overall diameter
324
mm
Baffle cutout diameter
281
mm
Mounting depth
130
mm
Volume occupied by the driver (estimated)
2.4
L
Net weight
5.5
kg
Impedance
Step response
Tone Burst
Focal Sub 12 Dual Dimensions
DatasheetDatasheet

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