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 - Two CLUB1224AM Club Series 12" Subwoofers with SSi Selectable Impedance - 2 or 4 Ohm - Walmart.com
JBL Stadium 82SSI
JBL S3-1224 SSI Subwoofer – Twin Cities Auto Spot
Amazon.com: JBL S2-1224 SSI Car Subwoofer : Electronics
JBL Stadium 82SSI
JBL S2-1224SS 12" SSI 12" SSI Subwoofer Enclosure with Slipstream Port S21224SS | eBay
Amazon.com: JBL S2-1224 SSI Car Subwoofer : Electronics
JBL STADIUM122SSI 12" High Performance Automotive Audio Subwoofer with Selectable Impedance - Creative Audio
Amazon.com: JBL S2-1224 - 12” Subwoofer with enclosure and SSI™ (Selectable Smart Impedance) switch from 2 to 4 ohm, Black (S2-1224SS) : Electronics
JBL CLUB1224AM Club Series 12 Inch Subwoofer with SSi Selectable Impedance - 2 or 4 Ohm - Creative Audio
Best Buy: JBL 450W 10" Single-Voice-Coil SSI Subwoofer Black / Orange S31024