JBL CX Series 12" Single-Voice-Coil 4-Ohm Subwoofer Black CX1200 - Best Buy
JBL STADIUM122SSI 12" High Performance Automotive Audio Subwoofer with Selectable Impedance - Used Very Good - Creative Audio
JBL IRX112BT 12-Inch Portable Powered Speaker with Bluetooth - Sound Productions
JBL CS1214 1000-watt, 12" Car Audio Subwoofer, Black - Walmart.com
Club Marine 12" Subwoofer
Amazon.com: EMB Professional 12" 1200W SB-12 Replacement Speaker for JBL, Peavey, Cerwin Vega, Gemini, EMB, BMB, Pyle-Pro, Mr.DJ & Many Brands! Protects the woofer and speaker in open installations.
Vintage JBL E120-8 12" 150W Speaker 8 Ohms | Cream City Music
JBL 12" 12PW PRO - 275 Watts RMS - 8 Ohm Woofer | Car Audio BR
GT5-12 | 30 cm (12 inch) subwoofer, with high output, can take peak load of 1100 Watts
Amazon.com: JBL Club WS1000 - 10” shallow mount subwoofer w/SSI™ (Selectable Smart Impedance) switch from 2 to 4 ohm, Black : Electronics
MP212 | JBL Professional Loudspeakers
Pre-Owned Vintage JBL D123 12" Speaker - 8 ohm - Five Star Guitars
JBL Arena X 12" Car Subwoofer - Each | World Wide Stereo