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Message: <blockquote data-quote="2025ChevNox" data-source="post: 29416" data-attributes="member: 10476"><p>See a professional. Look at upgrading your front door speakers and adding an under seat subwoofer. I did this in my 2020 Cadillac XT4 and it now sounds as good as any Bose factory system. You also need to bump your fader two or three bumps to the rear, max out your built in equalizer Bass, adjust Midrange and Treble to your hearing and increase volume. This gives the rear speakers more opportunity for you to hear all four speakers together.</p></blockquote><p></p>