Empire Sentinal-D 10 Inch Subwoofer With Amp for Sale in Chesterland, OH - OfferUp
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The 'King Kong' of affordable subwoofers - CNET
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Empire Car Audio - Five Star Champion Series by Empire 12″ Subwoofer Model CS – 1216 12” Subwoofer 4 ohm 3” High Quality Japanese High Temperature Aluminum Voice Coil 800 Watt RMS