Car Audio, No sub output on head unit, but have an amp. Will sound quality still be the same?

Question

I bought a S****y-beef head unit off ebay, i now discover it has no sub output, i was thinking of running wires from the right and left output on the head unit to my sub amp which filters out audio 20-50 and gets rid of the rest but will the sound quality still be good????????????????????????????????????...

Answer 1

yes it will. most people do it like that anyway(i do). and my car hits. if its a mono or 2 channel amp your running bass wit it will be fine the amp will not give out highes becas its left and right

Answer 2

If your radio has any amp preouts i would use that,you will get better sound quality.