MD Lab SW-C12
Subwoofer
12″ / 316 mm
Nominal diameter
25 Hz
Resonance
0.2
Q factor
89 dB
Sensitivity
700 W
Program Power
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Sensitivity (1w, 1m, infinite baffle)
SPL1W
88.7
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
25.1
Hz
Mechanical quality factor
QMS
1.57
Electrical quality factor
QES
0.23
Total quality factor
QTS
0.20
Large signal parameters
Power handling
P
350
W
Program power
Pmax
700
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.8
Ω
Inductance (1kHz, estimated)
LE
1.24
mH
Magnet
Force factor
Bl
21.32
N/A
Motor constant
Bl/√RE
10.9
N/√W
Diaphragm
Effective diameter
250
mm
Effective area
SD
492
cm²
Moving mass
MMS
176.2
g
Moving mass (without air load)
MMD
168.1
g
Suspensions
Stiffness
KMS
4.41
N/mm
Compliance
CMS
227
µm/N
Equivalent volume to the compliance
VAS
77.8
L
Mechanical resistance
RMS
17.78
N·s/m
Dimensions
Nominal diameter
12
″
316
mm
Overall diameter
316
mm
Baffle cutout diameter
284
mm
Overall depth
171
mm
Flange thickness
21
mm
Mounting depth
150
mm
Volume occupied by the driver (estimated)
3.1
L
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