12″ / 305 mm
Nominal diameter
30 Hz
Resonance
0.49
Q factor
86 dB
Sensitivity
± 9.5 mm
Linear excursion
750 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
86.2
dB
Frequency response
29 - 450
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
29.5
Hz
Mechanical quality factor
QMS
3.70
Electrical quality factor
QES
0.57
Total quality factor
QTS
0.49
Large signal parameters
Maximum linear excursion
xmax
9.5
mm
Air volume displaced at xmax
VD
466
cm³
Power handling
P
375
W
Program power
Pmax
750
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.4
Ω
Inductance (1kHz, in series, estimated)
LE
2.02
mH
VC Diameter
51
mm
Magnet
Force factor (in series)
Bl
19.13
N/A
Motor constant
Bl/√RE
7.56
N/√W
Weight
4.65
kg
Diaphragm
Effective diameter
250
mm
Effective area
SD
491
cm²
Moving mass
MMS
167
g
Moving mass (without air load)
MMD
159.2
g
Material
Non Pressed Paper
Suspensions
Stiffness
KMS
5.89
N/mm
Compliance
CMS
170
µm/N
Equivalent volume to the compliance
VAS
62
L
Mechanical resistance
RMS
8.37
N·s/m
Dimensions
Nominal diameter
12
″
305
mm
Baffle cutout diameter
297
mm
Mounting depth
140
mm
Volume occupied by the driver (estimated)
2.4
L
Export this driver to a simulation software:
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SpeakerSim
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SpeakerbenchSimilar subwoofers to PowerBass M-1204D
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Focal E 30 KX2 x 4 Ω
12″Subwoofer
fS
29 Hz
SD
502 cm²
20 - 500 Hz
QTS
0.46
xmax
22.5 mm
SPL1W
87 dB
Bl/√RE
8.42
Pmax
1600 W
.jpg.webp)
Focal SUB 30 KXE2 x 4 Ω
12″Subwoofer
fS
29 Hz
SD
502 cm²
25 - 500 Hz
QTS
0.46
xmax
22.5 mm
SPL1W
87 dB
Bl/√RE
8.42
Pmax
1600 W
.png.webp)
12″Subwoofer
fS
29 Hz
SD
491 cm²
29 - 450 Hz
QTS
0.40
xmax
9.5 mm
SPL1W
87 dB
Bl/√RE
8.08
Pmax
750 W