MD Lab SW-S12
Subwoofer
12″ / 322 mm
Nominal diameter
39 Hz
Resonance
0.43
Q factor
90 dB
Sensitivity
500 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 89.8
- dB
- 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
- Power handling
- P
- 250
- W
- Program power
- Pmax
- 500
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.8
- Ω
- Inductance (1kHz, estimated)
- LE
- 1.03
- mH
- Force factor
- Bl
- 15.33
- N/A
- Motor constant
- Bl/√RE
- 7.86
- N/√W
- Effective diameter
- 270
- mm
- Effective area
- SD
- 574
- cm²
- Moving mass
- MMS
- 130.2
- g
- Moving mass (without air load)
- MMD
- 120.5
- g
- 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
- 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
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