Fi Car Audio BTL4 18 D2 - user opinions

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Summary: Type: Subwoofer; Size: 18"; RMS Power: 3500 W; Max Power: 7000 W; Sensitivity: 88 dB; Impedance: 2x 2?�; DC resistance: 1.4 ?�; Resonant frequency: 25 Hz; Total Q factor: 0.52; Suspension equivalent air volume: 151 L; Maximum linear excursion: 33 mm; ...

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