Fi Car Audio SP4 15v2+ D2
2x1Ω
2x2Ω
Subwoofer
| Nominal diameter | 15″ / 397 mm |
| Resonance | 27.6 Hz |
| Q factor | 0.32 |
| Sensitivity | 88.5 dB |
| Linear excursion | ± 33 mm |
| Program Power | 7000 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 88.5dB
Thiele & Small parameters
- Resonance frequency (free air) fS 27.6Hz
- Mechanical quality factor QMS 8.76
- Electrical quality factor QES 0.33
- Total quality factor QTS 0.32
Large signal parameters
- Maximum linear excursion xmax 33mm
- Air volume displaced at xmax VD 2673cm³
- Power handling P 3500W
- Program power Pmax 7000W
Voice Coil
- Nominal impedance Z 2 x 2Ω
- DC resistance (in series) RE 2.5Ω
- Inductance (1kHz, in series, estimated) LE 3.2mH
Magnet
- Force factor (in series) Bl 24N/A
- Motor constant Bl/√RE 15.1N/√W
Diaphragm
- Effective diameter 321mm
- Effective area SD 810cm²
- Moving mass MMS 432g
- Moving mass (without air load) MMD 415g
Suspensions
- Stiffness KMS 12.8N/mm
- Compliance CMS 78.4µm/N
- Equivalent volume to the compliance VAS 71L
- Mechanical resistance RMS 8.55N·s/m
Dimensions
- Nominal diameter 15″
- 397mm
- Overall diameter 397mm
- Baffle cutout diameter 359mm
- Mounting depth 279mm
- Volume occupied by the driver 5.95L
Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
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Hornresp
QSpeakers
SpeakerSim
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