Challenger OPUS SD300FA - user opinions

Car speakers Specs << Challenger << Challenger OPUS SD300FA Specs

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Summary: Type: subwoofer; Size: 30 sm (12 inch.); The number of bands: 1; Rated power: 250 W; Maximum: 500 W; Sensitivity: 90 dB; Resonance Frequency (Fs): 33 Hz; Total Q factor (Qts): 0.49; Equivalent Volume (Vas): 54 l; Double winding: no; Free-Air: yes; Cleat spring; ...

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