ALPINE R-Series 12 Dual 4 Ohm Dvc Subwoofer - R2-W12D4
ALPINE R-Series 10 Dual Gap Voice Coil 2250W Subwoofer (4 Ohm) - R2-W10D4
ALPINE R-Series 8" Dual Voice Coil Subwoofer - R2-W8D4
Pioneer TS-D10D4 "D" SERIES 10" SUBWOOFER (D4) - 1500W Max / 500W Nom
Pioneer TS-D12D4 "D" SERIES 12" SUBWOOFER (D4) - 2000W Max / 600W Nom
