Has anyone swapped out any of the speakers on a 2021+ IS350 with ML? I've had the 2025 IS350 with ML for a few months now and I can't say that I'm overly impressed with the sound that I've gotten out of it. Tried playing around with the front/back fader but the rear door tweeter and mid woofer sound much worse compared to the front speakers and the rear deck speakers are barely audible. The front speakers are clear but but at times a bit shrill.

Currently thinking about replacing the corner dashboard speakers first but I'm getting some mixed information. I've dug through a few threads trying to find information but it seems like most of the info is for 2014-2020 models. With the 2021 refresh, it seems like they changed some of the speakers/ the amp so Im not sure if the diagram in this thread still applies. I also chatted with Crutchfield and they said that corner dashboard speakers are 4 ohm - recommending Rockford Fosgate R14X2. Can anyone verify? I might just pop one of corner speakers out this week and try to measure the impedance.