Use XOver from HU or amp?

[delrice]

Hi,
I've just installed an Alpine CDA7894, it has HPF and LPF xover. But i also have an Orion amp the CS500.5, wich has xover too. The question is, wich should i use? The xover from the HU or from the amp? or maybe a mix? I could use the xover in the HU for the front and rear speakers and the xover in the amp for the subs

Thanks for your help.

[SuckMikeHawk23]

use both of them

[delrice]

At the same time? What about overlaping frecuencies? I mean, the xover controls in the amp are knobs, i don't know exactly what frecuency i'm working on, but in the HU xover points are fixed, 60, 80, 120, 160 and so on. If i set the HPF in the HU at 120 for the front speakers, for example, how should i set the xover in the amp for the same channel?

What do u think?

[delrice]

Ok, the head unit is an Alpine CDA-7894 and the amp is an Orion CS500.5 with five channels.
Which sholud i choose?