11-03-2025, 04:53 PM
I've swapped my 3.0 IHU with a 3.2 system and the subwoofer stoped working. Anyone had similar experience?
For reference, I've flashed it with my config and tried different coding like HP, HK with and without subwoofer. Left the car to sleep multiple times but nothing helped to get the subwoofer back. One interesting thing I noticed is that my dash center speaker started to play with the new IHU (I retrofitted that speaker but it didn't play with my old IHU and my current AUD).
As I understand the IHU is connected to AUD through the optical line, perhaps Volvo have changed signal encoding in the newer audio system versions
@imay2023, @power6 any chance you've seen this before?
For reference, I've flashed it with my config and tried different coding like HP, HK with and without subwoofer. Left the car to sleep multiple times but nothing helped to get the subwoofer back. One interesting thing I noticed is that my dash center speaker started to play with the new IHU (I retrofitted that speaker but it didn't play with my old IHU and my current AUD).
As I understand the IHU is connected to AUD through the optical line, perhaps Volvo have changed signal encoding in the newer audio system versions
@imay2023, @power6 any chance you've seen this before?