I have a 2016 Challenger with the stock Alpine 6 Speaker system. I ended up changing out the front speakers to components and adding two subs. Because I didn't want to screw up anything with the factory system ( especially navigation prompts) I opted of the Audiocontrol dq-61, nice piece of gear with eq and time alignment, but the factory eq in this alpine system has a NASTY eq curve which the dq-61 just couldn't handle so I went the dsp route. I'm going to post pictures later on when I get to spend some time with it but so far the Audiocontrol DM-608 is a MONSTER. It's really interesting to see the NASTY eq curve the factory Alpine has, and even more interesting to see how it changes with the volume.....
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