Hello everyone, I have a 2019 s3 saloon with b&o system. The subwoofer crackles now and potentially needs replacing. I have seen on a video that people say you need a dsp to an amp to be able to upgrade the subwoofer or it will damage the b&o amp? I seen a Jl audio slim 10inch sub but I’m not sure if it would be ok mounted on the parcel shelf? And advice would be very appreciated