JBL Stage 1220B Ported enclosure with two 12" subwoofers
JBL Professional - JBL AM5212/64 2-Way Loudspeaker System With 1 X 12" LF - PSS Audiovisual Equipment
PRX812 | JBL Professional Loudspeakers
JBL GT5-2402BR Ported enclosure with two 12" GT5 subwoofers at Crutchfield
JBL Stadium 122SSI Stadium Series 12" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
JBL Club Series 12" 1100 Watts Selectable 2 or 4 Ohm Subwoofer CLUB 1224 - Walmart.com
Stage 1220B subwoofer enclosure | Dual 12" Stage subwoofers mounted in a slot-ported enclosure
2x JBL EON712 12" Powered Speaker w Bluetooth 1300W + 2x Cables + Stands & Bag
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