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, underrated, 3" coil | DIYMobileAudio.com Car Stereo Forum
JBL P1224 Power Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield
2x JBL P1224 Power Series Subwoofers - Car Parts - PakWheels Forums