JL Audio XD-RT4-4PAK Marine Subwoofers 6-1/2" or 6-3/4" speakers in

6-1/2" or 6-3/4" speakers in your factory speaker openings

drop-in installation in vehicles equipped with oversized 6

for parallel-wired specification divide Re by 4

allowing C2 coaxials to fit behind most factory speaker grilles

JL Audio XD-RT4-4PAK Marine Subwoofers 6-1/2" or 6-3/4" speakers inCrimpable Power Rings for 4 AWG Wire 4 Pack Malleable, pure copper construction Marine grade stannum plating to resist corrosion Two red and two black insulator sleeves are included A professional grade crimping tool is required to properly crimp these rings! Support: USA Limited Warranty: Two (2) years from the original date of purchase Warranty Details