@Kzaki
sir itna to define ker diya k kya hona chahiye system mein :(. its really HARD to satisfy you
kher lets think of it this way. everyone has his own choice of car. some like speed, some like comfort, some like control, some like fighting the car for controls. million people million choices. same with people's perception of audio. like i have been told by many that my tweeters are always set high. but thats my liking.
most people infact have to be told what is an sq system as they dont know how to judge it. more than once someone has sat in my car and listened to the music with a straight face. then i ask them to pay attention to any instrument and it will come in front and then i see their expressions change. to me that is sq enough.
it is very difficult to reproduce audiophile grade music in ur car. first of all there are too many irregular reflective surfaces which are very close to each other. too many interferences.... then the speakers are placed very close to each other which again limits ur stage to about 4 feet wide. if u play an audiophile recording of some big band orchestra in a car, all the instruments will pushed close to each other so to speak. an audiophile system should be such that u should just close ur eyes and the whole stage comes in front of u and you could point where each instrument is placed and what it is playing. it should be able to play how it was meant to be played.