Fi Car Audio BTL4 12 D2
2x1Ω
2x2Ω
Subwoofer
Nominal diameter | 12″ / 318 mm |
Resonance | 27.8 Hz |
Q factor | 0.42 |
Sensitivity | 83.1 dB |
Linear excursion | ± 33 mm |
Program Power | 7000 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 83.1dB
Thiele & Small parameters
- Resonance frequency (free air) fS 27.8Hz
- Mechanical quality factor QMS 6.16
- Electrical quality factor QES 0.45
- Total quality factor QTS 0.42
Large signal parameters
- Maximum linear excursion xmax 33mm
- Air volume displaced at xmax VD 1584cm³
- Power handling P 3500W
- Program power Pmax 7000W
Voice Coil
- Nominal impedance Z 2 x 2Ω
- DC resistance (in series) RE 2.8Ω
- Inductance (1kHz, in series, estimated) LE 3.28mH
Magnet
- Force factor (in series) Bl 20.2N/A
- Motor constant Bl/√RE 12.1N/√W
Diaphragm
- Effective diameter 247mm
- Effective area SD 480cm²
- Moving mass MMS 388g
- Moving mass (without air load) MMD 380g
Suspensions
- Stiffness KMS 11.6N/mm
- Compliance CMS 86µm/N
- Equivalent volume to the compliance VAS 27.1L
- Mechanical resistance RMS 11N·s/m
Dimensions
- Nominal diameter 12″
- 318mm
- Overall diameter 318mm
- Baffle cutout diameter 283mm
- Mounting depth 184mm
- Volume occupied by the driver 2.27L
Export this driver to a simulation software:
Closed Box Simulator·





