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B&C 21SW152 is a very high power 21" subwoofer for speaker subwoofer systems- B&C 21SW152 21" Subwoofer has a lightweight neodymium magnet - B&C 21SW152 21" high power speaker for speaker subwoofer
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Amazon.com: B&C R21SW152-4 Recone Kit for 21SW152-4 21" 4000W Neodymium Subwoofer 4-Ohms : Electronics
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