Ground Zero 450 SPL active subwoofer basskit (300 mm).

Ground Zero 450 SPL BassKit active subwoofer kit 12" (300 mm).

Ground Zero 450 SPL Basskit includes a 12″ SPL-subwoofer in a ported box. 
Box has a large port that gives a good air flow and Klippel-optimized subwoofer handles lots of power. 
This combined to a good sensitivity of the driver makes this box one of the LOUDEST in its price class. 
Class D 1000W amplifier feeds this box with sufficient amount of power. 

This enclosure uses EFP ( Enchanced Flow Port ) port. It has cross-section like aeroport. 
This gives significantly better air flow without side effects. 
More air throught the port = more bass! Despite the better air flow in same size enclosure, tuning frequency is the same than before. 
Amplifier has high input with autostart so you can use it with OEM headunits as well. 
Bass remote knob is included in the package.

Package includes following products:
- Subwoofer Ground Zero GZIW 12XSPL-D2 
- Amp. Ground Zero GZIA 1.1150D