Custom 3/4" MDF box (stuffed with insulation) housing an Alpine SWR-12D4 Type-R 12-Inch 1000W Subwoofer with Dual 4-ohm Voice Coils powered by an Alpine MRV-M500 mono subwoofer amplifier (500w). An AudioControl LC2i line output converter (LOC) with the optional AudioControl ACR-1 bass control dash remote are included. To protect the sub, an Alpine KTE-12G subwoofer grill is installed. All wiring is from a Crutchfield CK4 installation kit with 4 gauge red/black power and negative cables with an 1100 watts rating. Inline 50a fuses are installed. Total retail MSRP is north of $600 dollars not including the box and construction.
Just install and wire to your system and you'll get a tremendous boost to the bass in your car.