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Message: <blockquote data-quote="jwhisl" data-source="post: 1157166" data-attributes="member: 17856">There are several reasons for the stereo systems to sound different. First off the mach 460 system uses dedicated speakers for different frequencies. There are "subwoofers" and tweeters in the back with the mach 460 and full range speakers with tweeters in the doors. The rear speakers are also in an enclosure the was built to those specific speakers. The last thing is th use of dedicated amps in the 460 that give it a higher output than the average aftermarket cd player (200 watts vs 460 watts)The non 460 systems have nothing but a single amp in the dash and 4 full range speakers. The best thing to do is run your own wires to your deck and bypass that tiny amp. Realistically to get the best sound out of those infinity speakers you need to seal off the doors with dynomat and get an aftermarket amp to feed them more power. They will sound best with 50 watts per channel rms.hope this helps</blockquote>