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/Selenium 12MB3P 12" Woofer for MidBass 1000 Watts
JBL GX Series 12" Single-Voice-Coil 4-Ohm Subwoofer Black GX1200 - Best Buy
JBL BassPro 12" Subwoofer - CAR TUNES STEREO
JBL Grand Touring Series GT1241D 12" Dual 4-ohm Voice Coil Component Subwoofer at Crutchfield
Pair of JBL GX1200 12 inch 1000 Watts Peak Each 4 Ohm SVC Car Subwoofers** | eBay
JBL/Selenium 12MB3P 12" Woofer for MidBass 1000 Watts | Reverb