some info i've got credits to cacin from gr8tunes.
eh, don't la quote like that. The whole thing also I got from another website which I mentioned on my original post in gr8tunes.
can get 'car audio for dummies' book in malaysian bookstore already a?
bro sharpshooter,
1. As starters, can get Amp and Front comp speakers first.
2. Then, save up for good HU.
3. After that, you can go for amp and sub.
Step 1 and 2 above can swap.
For your questions:
1.HU - go for those that have feature like 2/3 way x-over, EQ, Time Alignment. Example: Alpine CDA-9815, Pioneer DEH-8650MP
2.crossover - if you already have this in the HU, then there's no need for it. If you don't, go for Macrom 48.13, KEF, Audiocontrol 2XS, 3XS, 4XS, TRU F1-A, F1B etc.
3.amp 2 or 4 channel - depends on what speakers you're trying to power.
4.mid bass. - should be the one from the component set.
6.capacitor - not using it at the moment, so can't say much on this.
But, you need to know what you want from your ICE. It's an 'expensive hobby' and there's no point of spending money based on impulse. Just make sure you know what you like/don't like with the current setup. Only then you can go enjoy the hobby one step at a time :)
Happy ICEing.