Best Buy: Infinity Kappa 10" Single-Voice-Coil 4-Ohm Subwoofer Silver 100.9W
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Infinity 100.9w Kappa Series 10" subwoofer with selectable 2- or 4-ohm impedance at Crutchfield
Infinity Kappa 100.9w - 10" 1400W Selectable 2 or 4-ohm Selectable Impedance Kappa Series Car Subwoofer Driver at OcsDeals.com
Infinity - Kappa 100.9w - 10 inch High Performance Selectable Impedance Subwoofer (1400W): Buy Infinity - Kappa 100.9w - 10 inch High Performance Selectable Impedance Subwoofer (1400W) Online at Low Price in India on Snapdeal