Pioneer TS-W303R Champion Series 12" 4-ohm subwoofer at Crutchfield
Pioneer CS-303 3-Way Loudspeaker System Manual | HiFi Engine
Car Subwoofers for sale in Brasília, Brazil | Facebook Marketplace | Facebook
One Single Pioneer CS-303 Floor Speaker w/10" Woofer- Tested, Sounds Nice | eBay
Amazon.com: PIONEER TS-A120D4 A Series 12" 1500 W Max Power, Dual 4 Ohm Voice Coil, IMPP Cone, Rubber Surround - Component Subwoofer, Black : Electronics