Polk Audio DB 840 - user opinions

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Specification

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Summary: Type: subwoofer; Size: 20 cm (8 in.); The number of bands: 1; Power: 180 W (nominal), 380 watts (maximum); Sensitivity: 85 dB; Frequency range: 30 - 200 Hz; Impedance: 4 Ohm; Housing: no; Number of speakers: 1; Dimensions: 200 mm; Cone material: polypropylene; Material suspension: Santoprene; Mounting depth: 116 mm; The installation ho ...

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