JBL Club 1224 Club Series 12" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
GT5-12 | Quality 12 inch Single Voice Coil (SVC) Subwoofer
JBL-EON712 | JBL Professional Loudspeakers
Amazon.com: JBL Professional EON712 Powered PA Loudspeaker, 12-Inch (Bluetooth) Bundle with Steel Speaker Stand, Stand Bag 51" Interior, and XLR-XLR Cable : Musical Instruments