Just want to ask if i can connect it this way, "HU -> Preamp -> Component Speaker"! Got any different if i didn't connect my component speaker to AMP and directly connect to preamp??

Cannot, as pre-amp and electronic crossover are signal boosters, they have only RCA outputs, not speakers output.

I thought it's like: HU -> RCA -> Preamp -> RCA -> Crossover -> speaker cable -> Mid bass + Tweeter ! Not like this meh?

no...
they dun have any amplification module

they have oni tuning knob which is controlling the signal that pass thru

Then how come those crossover component set can directly connect to HU?

thru RCA lo

Then my HU can connect to preamp through RCA then preamp can connect to Crossover through RCA lar.....then crossover output to speaker can?

kenot

correct way is like this

HU-RCA-Preamp/active crossover-RCA-Amp-Speakers

got it?

speakers can only get signal from amplification module from HU or AMP..not preamp nor crossover (both of them are not amplification module but tuning module)

confuse !! Those component set speaker which come with 1 set crossover + 1pair tweeter + 1 pair midbass not connect as : HU-RCA-Preamp-RCA-Crossover-tweeter+midbass ?

that 1 is call passive crossover

moreover.. u got the wrong way also

PREAMP DOES NOT HAVE AMPLIFICATION SIGNAL !!!!!!!!!!!!!!!!!!!!!!!!!!!!!

u know the meaning of preamp?
preamp means pre-amplifier (means the module before amplification)
so in order to use preamp u must have amplifier !!!!!!!!!!!!!!!!!!!!!!!!!!!!

so the correct way according to ur eq is

HU-Speaker Cable-Passive Crossover-Tweeter+Mid

It should be HU -> RCA -> Pre-amp/E-crossover -> RCA -> amp -> passive crossover -> speakers

The wordings in red is not a must for an ICE setup provided your HU has RCA outputs and you are limited on budget.

When using pre-amp, no need to use E-crossover or the other way round. As these 2 is to boost/filter the signal from HU to amp.

so passive crossover do not have RCA input? just connect the speaker cable from HU to that xover then that xover connect to mid and tweeter?

exactly

Pasive crossover is the second last part before the signal is send to the speaker as a selector for Low-Mid-High Signal

How bout the active crossover? can anyone explain.. ?

active crossover means adjustable freq