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Amazon.com: Pyle Car Mid Bass Speaker System - Pro 5 Inch 200 Watt 4 Ohm Auto Mid-Bass Component Poly Woofer Audio Sound Speakers For Car Stereo w/ 30 Oz Magnet Structure, 2.2”
Amazon.com: Skar Audio EVL-18 D4 18" 2500 Watt Max Power Dual 4 Ohm Car Subwoofer : Electronics
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