Focal K2 POWER E 30 KX
Subwoofer
12″ / 305 mm
Nominal diameter
29 Hz
Resonance
0.46
Q factor
87 dB
Sensitivity
± 22.5 mm
Linear excursion
1600 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 86.7
- dB
- Frequency response
- 20 - 500
- Hz
- Resonance frequency (free air)
- fS
- 29.0
- Hz
- Mechanical quality factor
- QMS
- 6.10
- Electrical quality factor
- QES
- 0.49
- Total quality factor
- QTS
- 0.46
- Maximum linear excursion
- xmax
- 22.5
- mm
- Air volume displaced at xmax
- VD
- 1130
- cm³
- Power handling
- P
- 800
- W
- Program power
- Pmax
- 1600
- W
- Nominal impedance
- Z
- 2 x 4
- Ω
- DC resistance (in series)
- RE
- 6.4
- Ω
- Inductance (1kHz, in series, estimated)
- LE
- 2.13
- mH
- VC Diameter
- 65
- mm
- Winding material
- Copper Clad Aluminium
- Former material
- Glass fiber
- Force factor (in series)
- Bl
- 21.3
- N/A
- Motor constant
- Bl/√RE
- 8.42
- N/√W
- Diameter
- 170
- mm
- Effective diameter
- 253
- mm
- Effective area
- SD
- 502
- cm²
- Moving mass
- MMS
- 183
- g
- Moving mass (without air load)
- MMD
- 175
- g
- Material
- Kevlar Sandwich
- Stiffness
- KMS
- 6.67
- N/mm
- Compliance
- CMS
- 150
- µm/N
- Equivalent volume to the compliance
- VAS
- 50
- L
- Mechanical resistance
- RMS
- 5.47
- N·s/m
- Surround material
- Butyl
- Nominal diameter
- 12
- ″
- 305
- mm
- Baffle cutout diameter
- 283
- mm
- Mounting depth
- 172
- mm
- Volume occupied by the driver
- 4.0
- L
- Net weight
- 11.2
- kg