hallöchen, (am new here), wanted to build me a 2-component system in front of my golf iv. but here in the forum there are probably only sound enthusiasts… (here is all too often the talk of canton, focal, …) I just wanted a komp system which shouldn’t be too expensive – do it because the systems of the “normal” car audio manufacturers (sony, pioneer, jvc, kenwood, panasonic, …) are not also or are not worth the recommendation (always no no-name out of the construction market) you have to know en, I don’t necessarily have the big idea of (I’m going to get it right away 🙂 because I don’t want to go for manufacturer sympathy when choosing, do I need your decision help: what should I look for? the frequency values actually move between 40hz-25khz (blue point) and 30hz-70khz(kenwood). what’s the lowest frequency should it be (I don’t have a subwoofer – should I buy “30hz” or make the difference to 40hz not audible? and up I actually wanted to hear mp3’s (radio is still coming), but then the heights are cut anyway (codes with r3mix.net settings – prima quali; ca. 170kbit vbr) which would be quite suitable for the heights? some systems have an external frequency soft (kenwood, jvc) others an integrated in the cable (pioneer) others an intregated high pass filter(sony; what is the difference to the integrated frequency soft?) others nothing at all… best is however an external one are integrated in the cable solutions also ok? many many questions – hopefully also many answers … thank you already kermit