I'm jumping in the thread late. I just got a 2024 AT4 with the BOSE system, not really impressed with the sound, its OK, but the Harmon Kardon in my RAM I just traded was way better, and obviously a custom system would rock. Trying to decide if i want tro and what to upgrade. I am partial to JL Audio, had their stuff in many vehicles, and my boats. Are the BOSE spoeakers in fact 2 ohm? I am seeing confliciting info when I look. I do see that the sub in the rear poanel is 2 OHM, and JL makes a stealth box with a dual voice 4 ohm SUB wired for 2 OHM. These seems to be a direct replacement for the factory, and I am curious if that alone will solve my base issue. I don't mind doing a full system install, but want to retain the factory head unit for sure due to its integration. Starting to explore options though, would love some input as it seems many of you have been down this road. I have had RAMS for 20 years, and this is my first GM so I am not familiar with the wiring, setups, etc. Lastly anyone know how to disable the annoying scroll lock while driving on the radio? I can scroll through my list of songs on my playlists more than 2 pages without the message coming up. Most annoying thing ever!!