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JBL CLUB1224AM Club Series 12 Inch Subwoofer with SSi Selectable Impedance - 2 or 4 Ohm - Creative Audio
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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
JBL S2-1224SS | 12" SSI Subwoofer Enclosure with Slipstream Port
JBL S2-1224SS Series II 12 Inch Subwoofer & Slipstream Ported Enclosure with SSi Selectable Impedance - 2 or 4 Ohm - Creative Audio
JBL S2-1024 Series II 10" SSI Subwoofer • FREE Shipping • Audio Jam Inc. of Delaware
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JBL 1024/10 Subwoofer W /SSI(Selectable Smart Impedance) switch from 2 to 4 ohm | eBay
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JBL Stadium 1024, Stadium Series 10" 2 Ohm or 4 Ohm Car Subwoofer w/ S – AVLeaderz