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 CS1214 12" Single 4 Ohm CS Series Car Subwoofer
JBL GX1200 High Performance 1000 Watts 12" 4 Ohm SVC Car Subwoofers SUB | eBay
JBL Lifestyle PartyBox 1000 Bluetooth Speaker with Lighting Effects | Sweetwater