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JBL Stadium 122SSI Stadium Series 12" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
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Amazon.com: JBL Club WS1200 - 12” Shallow mount subwoofer w/SSI™ (Selectable Smart Impedance) switch from 2 to 4 ohm : Electronics
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Amazon.com: JBL Club 1224 - 12” Subwoofer w/SSI™ (Selectable Smart Impedance) switch from 2 to 4 ohm, Black : Electronics
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Amazon.com: JBL S2-1224 - 12” Subwoofer with enclosure and SSI™ (Selectable Smart Impedance) switch from 2 to 4 ohm, Black (S2-1224SS) : Electronics
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JBL - Two CLUB1224AM Club Series 12" Subwoofers with SSi Selectable Impedance - 2 or 4 Ohm - Creative Audio
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