Amazon.com: JBL SUBBP12AM - 450 Watts (150W RMS) 12” Amplified 12 in. Ported Subwoofer with Sub Level Control and Distortion Free Bass with Gravity Magnet Phone Holder Bundle : Electronics
JBL Grand Touring Series GTO1204D 12" subwoofer with dual 4-ohm voice coils at Crutchfield
JBL+STAGE+1210+12+inch+1000W+Woofer for sale online | eBay
S3-1224 | 12" (300mm) high-performance car audio subwoofer
GT5-12 | Quality 12 inch Single Voice Coil (SVC) Subwoofer
JBL GX Series 12" Single-Voice-Coil 4-Ohm Subwoofer Black GX1200 - Best Buy
JBL STADIUM122SSI 12" High Performance Automotive Audio Subwoofer with Selectable Impedance - Creative Audio
JBL Stage 1220b - Dual 12" Stage subwoofers mounted in a slot-ported enclosure - Preloaded car subwoofer boxes - Custom Sounds & Tint
Amazon.com: JBL STADIUM122SSI 12" High Performance Automotive Audio Subwoofer with Selectable Impedance : Electronics
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 Stadium 122SSI Stadium Series 12" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield