Focal AUDITOR RSB 300
Subwoofer
12″ / 323 mm
Nominal diameter
25 Hz
Resonance
0.47
Q factor
87 dB
Sensitivity
600 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
86.8
dB
Frequency response
30 - 500
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
25.0
Hz
Mechanical quality factor
QMS
4.50
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.47
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
6.4
Ω
Inductance (1kHz, in series, estimated)
LE
1.73
mH
VC Diameter
50
mm
Magnet
Force factor (in series)
Bl
16.6
N/A
Motor constant
Bl/√RE
6.56
N/√W
Diameter
144
mm
Diaphragm
Effective diameter
245
mm
Effective area
SD
471
cm²
Moving mass
MMS
130
g
Moving mass (without air load)
MMD
122.2
g
Material
Polypropylene
Suspensions
Stiffness
KMS
3.33
N/mm
Compliance
CMS
300
µm/N
Equivalent volume to the compliance
VAS
93
L
Mechanical resistance
RMS
4.54
N·s/m
Surround material
Butyl
Dimensions
Nominal diameter
12
″
323
mm
Overall diameter
323
mm
Baffle cutout diameter
282
mm
Mounting depth
142
mm
Volume occupied by the driver (estimated)
1.8
L
Net weight
4.3
kg
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fS
26 Hz
SD
771 cm²
30 - 300 Hz
QTS
0.42
xmax
23.9 mm
SPL1W
88 dB
Bl/√RE
12
Pmax
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10″Woofer
fS
25 Hz
SD
343 cm²
25 - 2500 Hz
QTS
0.38
xmax
4.5 mm
SPL1W
87 dB
Bl/√RE
4.92
Pmax
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