Car Subwoofer TUNEX 12' Inch 1500W RMS/3000W Peak Subwoofer TX-1215D2/D4 DVC TUNEX 15' Inch 1500W RMS/3000W Peak Subwoofer TX-1515D2/D4 DVC TUNEX 12`SUBWOOFER 3000W TX-1230 D2 Tunex 15` SUBWOOFER 3000WATTS/RMS TX-1530 D2 TUNEX 18` SUBWOOFER 5000W RMS TX-1850 D2 Tunex 18' Subwoofer 1500W Rms TX-1815 TUNEX 18` SUBWOOFER 3000W RMS TX-1830 D2