5 CORE 6" Inch Subwoofer Car Audio 900W Peak Power Sub Woofer Pair Loudspeaker Wide Range High Power Bass Surround Sound Stereo 4 Ohm, 90mm Magnet Car Speakers with PP Cone Red,
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Goldwood Dual Voice Coil 10 in. Woofer 220-Watt 6 ohm Replacement Speaker GW-410D - The Home Depot
5 CORE 6" Inch Subwoofer Car Audio 700W Peak Power Sub Woofer Loudspeaker Wide Range High Power Bass Surround Sound Stereo 4 Ohm, 72 mm Magnet Car Speakers WF 672 (1 Piece) - Walmart.com