NitroSound - JBL P1224 Power Series 12" subwoofer with dual 4-ohm voice coils Do you want maximum performance from your subwoofer? JBL puts Plus One technology to work in the Power Series
JBL P1224 Power Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield
JBL P1224 (P-1224) 12" Dual 4 ohm Power Car Subwoofer