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Infinity Kappa 123WDSSI Kappa Series 12" subwoofer with selectable 2- or 4-ohm impedance at Crutchfield
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Infinity - Two KAPPA 12" (300mm) 500 Watt RMS, High-Performance Subwoofers, Switchable 2 OR 4 OHM - Walmart.com
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Infinity Kappa 83WDSSI Kappa Series 8" subwoofer with selectable 2- or 4-ohm impedance at Crutchfield
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Infinity Kappa 1000W Kappa Series 10" subwoofer with selectable 2- or 4-ohm impedance at Crutchfield
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Amazon.com: Infinity - Two Kappa 10" (250mm) 450Watt RMS High-Performance Subwoofers, Switchable 2 OR 4 OHM : Electronics
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Infinity Kappa 83WDSSI Kappa Series 8" subwoofer with selectable 2- or 4-ohm impedance at Crutchfield
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Amazon.com: Infinity 8” Subwoofer w/SSI (Selectable Smart Impedance), Black, INFSUBKA83WDSSIAM : Electronics
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