Fi Car Audio IB318 v2 S2
2Ω
4ΩSubwoofer
18″ / 470 mm
Nominal diameter
24 Hz
Resonance
0.79
Q factor
89 dB
Sensitivity
± 34 mm
Linear excursion
1200 W
Program Power
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 89.1
- dB
- Resonance frequency (free air)
- fS
- 24.4
- Hz
- Mechanical quality factor
- QMS
- 9.56
- Electrical quality factor
- QES
- 0.87
- Total quality factor
- QTS
- 0.79
- Maximum linear excursion
- xmax
- 34.0
- mm
- Air volume displaced at xmax
- VD
- 4114
- cm³
- Power handling
- P
- 600
- W
- Program power
- Pmax
- 1200
- W
- Nominal impedance
- Z
- 2
- Ω
- DC resistance
- RE
- 1.8
- Ω
- Inductance (1kHz, estimated)
- LE
- 0.88
- mH
- Force factor
- Bl
- 10.6
- N/A
- Motor constant
- Bl/√RE
- 7.9
- N/√W
- Effective diameter
- 393
- mm
- Effective area
- SD
- 1210
- cm²
- Moving mass
- MMS
- 338
- g
- Moving mass (without air load)
- MMD
- 308.2
- g
- Stiffness
- KMS
- 8.33
- N/mm
- Compliance
- CMS
- 120
- µm/N
- Equivalent volume to the compliance
- VAS
- 246
- L
- Mechanical resistance
- RMS
- 5.42
- N·s/m
- Nominal diameter
- 18
- ″
- 470
- mm
- Overall diameter
- 470
- mm
- Baffle cutout diameter
- 425
- mm
- Mounting depth
- 241
- mm
- Volume occupied by the driver
- 6.23
- L