MD Lab SW-B12F
Subwoofer
12″ / 310 mm
Nominal diameter
43 Hz
Resonance
1.29
Q factor
88 dB
Sensitivity
900 W
Program Power
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 87.8
- dB
- Resonance frequency (free air)
- fS
- 42.8
- Hz
- Mechanical quality factor
- QMS
- 7.20
- Electrical quality factor
- QES
- 1.57
- Total quality factor
- QTS
- 1.29
- Power handling
- P
- 300
- W
- Program power
- Pmax
- 900
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.4
- Ω
- Inductance (1kHz, estimated)
- LE
- 1.0
- mH
- Force factor
- Bl
- 9.3
- N/A
- Motor constant
- Bl/√RE
- 5.04
- N/√W
- Effective diameter
- 264
- mm
- Effective area
- SD
- 547
- cm²
- Moving mass
- MMS
- 150
- g
- Moving mass (without air load)
- MMD
- 141.1
- g
- Stiffness
- KMS
- 11.11
- N/mm
- Compliance
- CMS
- 90
- µm/N
- Equivalent volume to the compliance
- VAS
- 38.2
- L
- Mechanical resistance
- RMS
- 5.6
- N·s/m
- Nominal diameter
- 12
- ″
- 310
- mm
- Overall diameter
- 310
- mm
- Baffle cutout diameter
- 286
- mm
- Overall depth
- 171
- mm
- Flange thickness
- 12
- mm
- Mounting depth
- 159
- mm
- Volume occupied by the driver (estimated)
- 3.0
- L
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