This weekend I updated the dash speakers (all three) to Infinity REF-3022's using the Metra 72-7902 wiring adapter and all 4 doors to Infinity REF-9623ix using the Metra 71-050. I have the Alpine system with Uconnect 8.4 w/NAV. Both of theses infinity speakers are last year's version I got at a good price on Amazon. I got the wiring adapters from Crutchfield.
Based on what I read, I swapped the pins on the driver front dash speaker since there is a lot of reports these are reversed and swapping them gives better sound. I noticed that, with this setup, I needed to shift the fader to the front to move the sound stage since it was basically behind the driver with the fader set to center. I also noticed that even when I moved it up front, it seemed to be more shifted to the passenger side. So, this seemed to indicate the driver front was fighting the other speakers and I re-pinned the connector back to the way it came. Much much better (at least on my truck). My fader is now only very slightly toward the front (1 click) and the stage is center dash. I did not actually test the speaker phase but it is working great now. The the new speakers, the booming base is mostly tamed and it has much more clarity. I am still tweaking the settings but for now have the Bass -2, Mid +1, High -1 ... pretty mild adjustments
My biggest gripe now is that there is still some base resonance I can hear at some frequencies but it is not major and I can live with it. I also vary my volume a lot and I have yet to find a loudness setting on the Alpine system so as I change volume, I need to readjust the tune since the perception of bass drops off at low volumes ... what a pain. I see the speed setting but not one for loudness. I will look more and hopefully I am missing the setting. As I go thru the volume range, I need to adjust the Bass from -2 to +2 depending on volume ... sigh...