hi,
I need help on my car audio system. can anyone give me good wiring diagram how to do wiring on audio system which i have 6'(150watt) subwoofer at back which is connected with crossover and twitter and 6' (150watt) 2 way speaker at front door. i have CD player and one Amplifier (600watt). Currently the sound system not so good I can get good bass sound at my back speaker. All the my 4 speakers are connected with one amplifier.Pls send my the diagram

 

The best thing for you to do is buy yourself a set of speakers for the front doors and the rears then buy a decnt enough amp to power them and then worry about bass.