PowerBass XL-1240
4Ω
2x4ΩSubwoofer
12″ / 305 mm
Nominal diameter
33 Hz
Resonance
0.57
Q factor
87 dB
Sensitivity
± 8.5 mm
Linear excursion
800 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 87.4
- dB
- Frequency response
- 33 - 450
- Hz
- Resonance frequency (free air)
- fS
- 33.0
- Hz
- Mechanical quality factor
- QMS
- 3.73
- Electrical quality factor
- QES
- 0.64
- Total quality factor
- QTS
- 0.57
- Maximum linear excursion
- xmax
- 8.5
- mm
- Air volume displaced at xmax
- VD
- 469
- cm³
- Power handling
- P
- 400
- W
- Program power
- Pmax
- 800
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.5
- Ω
- Inductance (1kHz, estimated)
- LE
- 1.12
- mH
- VC Diameter
- 51
- mm
- Force factor
- Bl
- 14.81
- N/A
- Motor constant
- Bl/√RE
- 7.92
- N/√W
- Weight
- 5.27
- kg
- Effective diameter
- 265
- mm
- Effective area
- SD
- 552
- cm²
- Moving mass
- MMS
- 171.9
- g
- Moving mass (without air load)
- MMD
- 163.1
- g
- Material
- Non Pressed Paper
- Stiffness
- KMS
- 7.83
- N/mm
- Compliance
- CMS
- 128
- µm/N
- Equivalent volume to the compliance
- VAS
- 55.2
- L
- Mechanical resistance
- RMS
- 9.56
- N·s/m
- Nominal diameter
- 12
- ″
- 305
- mm
- Baffle cutout diameter
- 281
- mm
- Mounting depth
- 145
- mm
- Volume occupied by the driver (estimated)
- 2.4
- L