MD Lab SW-A15
Subwoofer
15″ / 400 mm
Nominal diameter
29 Hz
Resonance
0.6
Q factor
86 dB
Sensitivity
900 W
Program Power
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Sensitivity (1W, 1m, infinite baffle)
SPL1W
85.5
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
29.3
Hz
Mechanical quality factor
QMS
3.17
Electrical quality factor
QES
0.74
Total quality factor
QTS
0.60
Large signal parameters
Power handling
P
450
W
Program power
Pmax
900
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.8
Ω
Inductance (1kHz, estimated)
LE
1.61
mH
Magnet
Force factor
Bl
11.0
N/A
Motor constant
Bl/√RE
5.64
N/√W
Diaphragm
Effective diameter
320
mm
Effective area
SD
805
cm²
Moving mass
MMS
268.4
g
Moving mass (without air load)
MMD
251.7
g
Suspensions
Stiffness
KMS
9.09
N/mm
Compliance
CMS
110
µm/N
Equivalent volume to the compliance
VAS
101
L
Mechanical resistance
RMS
15.58
N·s/m
Dimensions
Nominal diameter
15
″
400
mm
Overall diameter
400
mm
Baffle cutout diameter
362
mm
Overall depth
270
mm
Flange thickness
35
mm
Mounting depth
235
mm
Volume occupied by the driver (estimated)
7.9
L
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fS
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SD
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fS
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SD
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