JBL Club 1224 Club Series 12" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
W12GTI II | 12 inch Differential Drive Design Subwoofer
JBL Stage 1220B 1000W Dual 12" Subwoofer Enclosure | Best Jeep Wrangler JK 4 Door Subwoofer Box
Amazon.com: JBL 12" Car Audio Subwoofer : Electronics
Amazon.com: JBL Club 1224 12" Car Audio Subwoofer : Electronics
JBL CLUB1224AM Club Series 12 Inch Subwoofer with SSi Selectable Impedance - 2 or 4 Ohm - Creative Audio
JBL BassPro 12" Subwoofer - CAR TUNES STEREO
Amazon.com: JBL Club WS1200 12" Shallow Mount subwoofer w/SSI (Selectable Smart Impedance) Switch from 2 to 4 ohm Bundled with Alphasonik Earbuds : Electronics
JBL CLUB1224AM Club Series 12 Inch Subwoofer with SSi Selectable Impedance - 2 or 4 Ohm - Creative Audio
JBL P1224 Power Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Pasion 12SP | JBL Professional Loudspeakers
JBL Club WS1200 | 12” Shallow Mount Subwoofer
W12GTI II | 12 inch Differential Drive Design Subwoofer