PowerBass 2XL-1204D
Subwoofer
12″ / 305 mm
Nominal diameter
28 Hz
Resonance
0.4
Q factor
85 dB
Sensitivity
± 13 mm
Linear excursion
900 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
85.0
dB
Frequency response
25 - 450
Hz
Thiele & Small parameters
Resonance frequency (free air)
fS
28.0
Hz
Mechanical quality factor
QMS
4.89
Electrical quality factor
QES
0.44
Total quality factor
QTS
0.40
Large signal parameters
Maximum linear excursion
xmax
13.0
mm
Air volume displaced at xmax
VD
663
cm³
Power handling
P
450
W
Program power
Pmax
900
W
Voice Coil
Nominal impedance
Z
2 x 4
Ω
DC resistance (in series)
RE
6.8
Ω
Inductance (1kHz, in series, estimated)
LE
2.71
mH
VC Diameter
64
mm
Magnet
Force factor (in series)
Bl
23.8
N/A
Motor constant
Bl/√RE
9.13
N/√W
Weight
7.94
kg
Diaphragm
Effective diameter
255
mm
Effective area
SD
510
cm²
Moving mass
MMS
244.6
g
Moving mass (without air load)
MMD
236.4
g
Material
IMFPM / PP Matrix
Suspensions
Stiffness
KMS
6.69
N/mm
Compliance
CMS
150
µm/N
Equivalent volume to the compliance
VAS
55.4
L
Mechanical resistance
RMS
8.8
N·s/m
Dimensions
Nominal diameter
12
″
305
mm
Baffle cutout diameter
280
mm
Mounting depth
167
mm
Volume occupied by the driver (estimated)
2.4
L
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SD
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SD
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