PowerBass S-12TD
4Ω
2x4Ω
Shallow Subwoofer
12″ / 305 mm
Nominal diameter
36 Hz
Resonance
0.94
Q factor
85 dB
Sensitivity
± 6.8 mm
Linear excursion
600 W
Program Power
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Specifications
Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.1
dB
Frequency response
29 - 350
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
36.4
Hz
Mechanical quality factor
QMS
4.40
Electrical quality factor
QES
1.19
Total quality factor
QTS
0.94
Large signal parameters
Maximum linear excursion
xmax
6.8
mm
Air volume displaced at xmax
VD
361
cm³
Power handling
P
300
W
Program power
Pmax
600
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.5
Ω
Inductance (1kHz, in series, estimated)
LE
2.17
mH
VC Diameter
51
mm
Magnet
Force factor (in series)
Bl
15.12
N/A
Motor constant
Bl/√RE
5.93
N/√W
Weight
3.97
kg
Diaphragm
Effective diameter
260
mm
Effective area
SD
531
cm²
Moving mass
MMS
183.4
g
Moving mass (without air load)
MMD
174.9
g
Material
Injection molded Polypropylene
Suspensions
Stiffness
KMS
9.61
N/mm
Compliance
CMS
104
µm/N
Equivalent volume to the compliance
VAS
41.7
L
Mechanical resistance
RMS
9.54
N·s/m
Dimensions
Nominal diameter
12
″
305
mm
Baffle cutout diameter
278
mm
Mounting depth
83
mm
Volume occupied by the driver (estimated)
2.4
L
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