DB Drive WDX12 7KD4
2x2Ω
2x4Ω
Subwoofer
12″ / 305 mm
Nominal diameter
40 Hz
Resonance
0.43
Q factor
84 dB
Sensitivity
7000 W
Program Power
Discontinued
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- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 84.4
- dB
- Resonance frequency (free air)
- fS
- 40.2
- Hz
- Mechanical quality factor
- QMS
- 6.16
- Electrical quality factor
- QES
- 0.46
- Total quality factor
- QTS
- 0.43
- Power handling
- P
- 3500
- W
- Program power
- Pmax
- 7000
- W
- Nominal impedance
- Z
- 2 x 4
- Ω
- DC resistance (in series)
- RE
- 6.8
- Ω
- Inductance (1kHz, in series, estimated)
- LE
- 3.29
- mH
- Force factor (in series)
- Bl
- 35.37
- N/A
- Motor constant
- Bl/√RE
- 13.6
- N/√W
- Effective diameter
- 234
- mm
- Effective area
- SD
- 432
- cm²
- Moving mass
- MMS
- 334.4
- g
- Moving mass (without air load)
- MMD
- 327.7
- g
- Stiffness
- KMS
- 20.04
- N/mm
- Compliance
- CMS
- 50
- µm/N
- Equivalent volume to the compliance
- VAS
- 13.2
- L
- Mechanical resistance
- RMS
- 13.71
- N·s/m
- Nominal diameter
- 12
- ″
- 305
- mm
- Volume occupied by the driver (estimated)
- 2.4
- L
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