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Amazon.com: Infinity - Two Kappa 12" (300mm) 500 Watt RMS, High-Performance Subwoofers, Switchable 2 OR 4 OHM : Electronics
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Hifonics THW12D4 Zeus Theta 1000W Max 500W RMS 4 Ohm 12 Inch Car Audio Subwoofer, 1 Piece - Harris Teeter
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