I updated my firmware to version 74 today and was surprised that when I turned my radio on, the sound seems to be noticeably not as good as it was before. I do have a subwoofer in the car, but even that sounds a bit worse than before. Anything between 40-60hz is not very clear, just obnoxious and anything under 40 is almost non-existent. Before the update, everything was crystal clear, lows hit super low but the front speakers would distort so I assume thats why mazda made the change.

Any suggestions on how to fix this?