GT said:
I never feel the need to change tone settings on my trucks cd player, when I play comercial cds, but when I would play my own mixes, they allways sounded like I needed to change the tone.
This has to do with 2 things -- 1) well-balanced mixes comprised of well-structured tracks and arrangement, and 2) to a lesser degree, checking mixes on multiple systems...
1) A song arrangement, with tracks well-placed across the frequency range of the spectrum results in mixes that translate well to all systems... usually any difference is the fault of the limitations of the listening device - ie listening to a good mix on a boombox means hyped highs and lows, listening on a tabletop radio means almost no lows, but if it's mixed well, bass overtones are properly audible and so you hear less bass but not "no bass"...
2) Its always a good idea to check a mix on multiple systems - but not get hung-up on the failings specific to those systems. ie, you don't boost lows and highs of the mix to make it sound good on a tabletop radio...
This is why I say it's better to get a well-balanced mix right from the start than it is to check a poor mix on multiple systems and tweak it to death. If you're having to fuck with a mix too much to get it to translate well across systems, then I think you have to examine the characteristics of the tracks themselves and how they interact - for example: poorly-recorded bass tracks will always sound "wrong", no matter what system you play it on - or worse, it will sound good on one system, but nowhere else...
Basically, tracks that don't work well together will always "not play nicely" regardless of the monitoring system - so it's important to pay attention to all aspects of the production.
A well-recorded track depend on good arrangement and well-captured sound sources... a well-balanced mix that translates well depends on well-defined tracks that fit... a good-sounding master depends on a well-balanced mix.
Get one stage in the production wrong, and you're fucked for all following stages, resulting in a diminshing spiral of tweaks that may or may not allow you to re-capture the sound.
YMMV.......!