need help on Sound system

[viosx]

i juz installed mohawk sound system in my car.. full components, 2 channel 600Watts amp x 2 (mohawk) and 12" double coil woofers x 2..
somehow i dun feel the bass and its not hitting properly..
any idea on wat should i fix? im still using a standard player and im planning to put in a kenwood double din player and electronic crossover..
really blur on this..

 

[blitzs360]

bro better go 2 ICE section a lot of sifu there. btw let the speakers settle in for a month or two and its just a matter of tuning