I really don't want to go down the rabbit hole with this. Just annoyed with the growing weirdness of my Helix (I don't think I caused it but anything is possible). The increased power coupled with ability to adjust crossovers should be enough to keep my happy. Already have aftermarket speakers in the doors but I remember reading that there may be some resistor weirdness hidden in the wiring so I'm going to check that out. And I want to tame my sub. There's a big cabin gain peak, not sure the exactly where in the frequency range but should be easy enough to figure out with the 30 band EQ.I tried to go down the hole...but I got stuck. I ended up sticking to some pretty simple cross overs and didn't do a lot to the eq. Still sounds way better than stock.