JBL Stadium 102SSI Stadium Series 10" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
JBL Arena X 12" Car Subwoofer - Each | World Wide Stereo
Amazon.com: JBL Club 9630 480 Peak Power 6x9 3 ohm Club Series 3-Way UV-Resistant Polypropylene Woofers Coaxial Car Audio Stereo Speakers Grilles Included Bundled with Alphasonik Earbuds : Electronics
2 X JBL Club WS1000 800W 10" Club Series 2 or 4-Ohm Shallow-Mount Car Subwoofers | eBay
JBL-BASSPRO12 Car Subwoofer-GTBASSPRO2 | Audio Express | Western United States