Rear speakers/subwoofer on 2024 QX60

[DaBlitz]

I just got a 2024 QX60 with the upgraded 17-speaker system and noticed something odd. When I push the fader all the way to the rear, there's basically no bass, and the rear speakers sound weak on their own. I thought there was a sub in the cargo area, so this surprised me. Has anyone figured out if there's a hidden diagnostic menu or speaker test for the 2022+ models? TIA.

 

[Funkopop]

I say thats pretty common with the QX60's factory system, pushing the fader all the way back often cuts bass to the rear speakers since the sub is tied into the front channels. Some users have found a hidden audio test in the infotainment settings under "Service Mode" or "System Test," but its not officially documented, so access can vary by model year