Re: Help me understand car audio I would buy the headunit first alpine,pioneer,sony or the same quality then get the wiring eg 4 guage atleast will be alright up to about 1500 watt depending on amp power then get a amp if you want to amp door speakers get a 4 channel amp power front doors and use the other 2 channels to run sub or get two amps a mono block and a 2 or 4 channel amp depends if your amping 4 door speakers or 2 will be sorted then you can look into a power cap if you decide you need one i have never used one as i only had a 350 watt rms amp |