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Best Buy: JBL 450W 10" Single-Voice-Coil SSI Subwoofer Black / Orange S31024
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JBL Club 1224 Club Series 12" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
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1 Pair (QTY 2) of JBL STADIUM122SSI 12” High Performance 1350 Watts Peak Power Car Audio Subwoofers with SSI (Selectable Smart Impedance) - Road Entertainment
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JBL Stadium 1024 Stadium Series 10" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
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JBL Club 1224 - 12” Subwoofer w/SSI™ (Selectable Smart Impedance) switch2 | eBay
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JBL S2-1224SS Series II 12 Inch Subwoofer & Slipstream Ported Enclosure with SSi Selectable Impedance - 2 or 4 Ohm - Creative Audio
