sonofagunn
Member
The 2 rear door speakers are the culprits. They are very soft (1/2 volume) and have ABSOLUTELY NO BASS even if the EQ is set to 8 on bass. The front 3 speakers thump with bass and the rear 2 door speakers nothing.
Check your "Dolby Audio" setting. I have an early 2014 Model S MCU1 with premium audio, and if I have Dolby Audio turned ON, the rear speakers are soft with very little bass - kind of like they are surround sound speakers in a home theater setup. If I turn Dolby Audio OFF, the rear speakers are balanced like a traditional car stereo setup.