Fi Car Audio IB312 v2 S4
2Ω
4Ω
Subwoofer
12″ / 318 mm
Nominal diameter
27 Hz
Resonance
0.65
Q factor
83 dB
Sensitivity
± 34 mm
Linear excursion
1200 W
Program Power
![Fi Car Audio IB312 v2 S4 Subwoofer](/Fi/IB312_v2_S4/Fi_IB312_v2_S4_(Photo_1).png)
![Fi Car Audio IB312 v2 S4 Subwoofer](/Fi/IB312_v2_S4/Fi_IB312_v2_S4_(Photo_2).png)
![Fi Car Audio IB312 v2 S4 Subwoofer](/Fi/IB312_v2_S4/Fi_IB312_v2_S4_(Photo_3).png)
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 83.4
- dB
- Resonance frequency (free air)
- fS
- 27.3
- Hz
- Mechanical quality factor
- QMS
- 7.65
- Electrical quality factor
- QES
- 0.73
- Total quality factor
- QTS
- 0.65
- Maximum linear excursion
- xmax
- 34.0
- mm
- Air volume displaced at xmax
- VD
- 1632
- cm³
- Power handling
- P
- 600
- W
- Program power
- Pmax
- 1200
- W
- Nominal impedance
- Z
- 4
- Ω
- DC resistance
- RE
- 3.6
- Ω
- Inductance (1kHz, estimated)
- LE
- 1.45
- mH
- Force factor
- Bl
- 15.0
- N/A
- Motor constant
- Bl/√RE
- 7.91
- N/√W
- Effective diameter
- 247
- mm
- Effective area
- SD
- 480
- cm²
- Moving mass
- MMS
- 249
- g
- Moving mass (without air load)
- MMD
- 241.1
- g
- Stiffness
- KMS
- 7.3
- N/mm
- Compliance
- CMS
- 137
- µm/N
- Equivalent volume to the compliance
- VAS
- 44.2
- L
- Mechanical resistance
- RMS
- 5.58
- N·s/m
- Nominal diameter
- 12
- ″
- 318
- mm
- Overall diameter
- 318
- mm
- Baffle cutout diameter
- 283
- mm
- Mounting depth
- 165
- mm
- Volume occupied by the driver
- 3.96
- L
Thiele & Small parameters
Large signal parameters
Voice Coil
Magnet
Diaphragm
Suspensions
Dimensions
Export this driver to a simulation software:
![WinISD](/images/export/WinISD.png)
![Basta!](/images/export/Basta.png)
![Hornresp](/images/export/Hornresp.png)
![QSpeakers](/images/export/QSpeakers.png)
![SpeakerSim](/images/export/SpeakerSim.png)
![MfbLabs](/images/export/MfbLabs.png)
![Speakerbench](/images/export/Speakerbench.png)