Which one of you has a full-acting FS?

So I’m thinking about running the FS fully active in my new car (Astra G), how are your experiences?. especially interested in setting the frequencies, on the radio or at the amp? I can’t really imagine that you can adjust that at the amp really well, if I look at my p4 evo, there’s a rotary controller of 20-4000hz. then I’m looking for a suitable FS, should really kick, the ht can’t be shrill, should not cost the whole thing like 300€ maxi What if you don’t buy a complete FS, but e.g. a carpower ht and any exact tmt or something like that, would go there too? I read the carpower ht should be price performance top, but I never heard it, and I don’t know if that would satisfy my requirements. I want to operate the whole thing then probably with my p4 evo, or maybe I will sell it, I don’t know exactly, only what alternative would I have in the pre Is it great? or is it perhaps better to do the whole with 2 2 channel steps? with many tmts I have read that the only so low power of 150rms really go to the point and that deliver the least 4 channelrs. all in all a good price performance ratio should come around.