MD Lab SW-S12
Subwoofer
12″ / 322 mm
Nominal diameter
39 Hz
Resonance
0.43
Q factor
90 dB
Sensitivity
500 W
Program Power
.jpg)
.jpg)
.jpg)
Sensitivity (1w, 1m, infinite baffle)
SPL1W
89.8
dB
Thiele & Small parameters
Resonance frequency (free air)
fS
39.4
Hz
Mechanical quality factor
QMS
2.47
Electrical quality factor
QES
0.52
Total quality factor
QTS
0.43
Large signal parameters
Power handling
P
250
W
Program power
Pmax
500
W
Voice Coil
Nominal impedance
Z
4
Ω
DC resistance
RE
3.8
Ω
Inductance (1kHz, estimated)
LE
1.03
mH
Magnet
Force factor
Bl
15.33
N/A
Motor constant
Bl/√RE
7.86
N/√W
Diaphragm
Effective diameter
270
mm
Effective area
SD
574
cm²
Moving mass
MMS
130.2
g
Moving mass (without air load)
MMD
120.5
g
Suspensions
Stiffness
KMS
8.0
N/mm
Compliance
CMS
125
µm/N
Equivalent volume to the compliance
VAS
58.3
L
Mechanical resistance
RMS
13.06
N·s/m
Dimensions
Nominal diameter
12
″
322
mm
Overall diameter
322
mm
Baffle cutout diameter
288
mm
Overall depth
98
mm
Flange thickness
16
mm
Mounting depth
82
mm
Volume occupied by the driver (estimated)
1.5
L
Similar subwoofers to MD Lab SW-S12
.jpg.webp)
12″Subwoofer
fS
40 Hz
SD
515 cm²
40 - 900 Hz
QTS
0.46
xmax
8.0 mm
SPL1W
90 dB
Bl/√RE
7.48
Pmax
600 W
.jpg.webp)
12″Subwoofer
fS
37 Hz
SD
491 cm²
35 - 3000 Hz
QTS
0.40
xmax
8.0 mm
SPL1W
90 dB
Bl/√RE
7.27
Pmax
900 W
.jpg.webp)
12″Subwoofer
fS
36 Hz
SD
491 cm²
35 - 2000 Hz
QTS
0.42
xmax
7.0 mm
SPL1W
90 dB
Bl/√RE
7.39
Pmax
800 W