Fi Car Audio IB318 v2 S2
2Ω
4ΩSubwoofer
Nominal diameter | 18″ / 470 mm |
Resonance | 24.4 Hz |
Q factor | 0.79 |
Sensitivity | 89.1 dB |
Linear excursion | ± 34 mm |
Program Power | 1200 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 89.1dB
Thiele & Small parameters
- Resonance frequency (free air) fS 24.4Hz
- Mechanical quality factor QMS 9.56
- Electrical quality factor QES 0.87
- Total quality factor QTS 0.79
Large signal parameters
- Maximum linear excursion xmax 34mm
- Air volume displaced at xmax VD 4114cm³
- Power handling P 600W
- Program power Pmax 1200W
Voice Coil
- Nominal impedance Z 2Ω
- DC resistance RE 1.8Ω
- Inductance (1kHz, estimated) LE 1.93mH
Magnet
- Force factor Bl 10.6N/A
- Motor constant Bl/√RE 7.9N/√W
Diaphragm
- Effective diameter 393mm
- Effective area SD 1210cm²
- Moving mass MMS 338g
- Moving mass (without air load) MMD 308g
Suspensions
- Stiffness KMS 8.33N/mm
- Compliance CMS 120µm/N
- Equivalent volume to the compliance VAS 246L
- Mechanical resistance RMS 5.42N·s/m
Dimensions
- Nominal diameter 18″
- 470mm
- Overall diameter 470mm
- Baffle cutout diameter 425mm
- Mounting depth 241mm
- Volume occupied by the driver 6.23L
Export this driver to a simulation software:
Closed Box Simulator·





